./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh --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 efc4103a673d30f5c3fd98741c7d56d84f1ec5a0e9e3b77a4d9f9d9493ec5192 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:00:24,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:00:24,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 13:00:24,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:00:24,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:00:24,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:00:24,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:00:24,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:00:24,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:00:24,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:00:24,727 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:00:24,727 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:00:24,728 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:00:24,728 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:00:24,729 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:00:24,730 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:00:24,730 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:00:24,731 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:00:24,731 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:00:24,732 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:00:24,733 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:00:24,736 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:00:24,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:00:24,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:00:24,738 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:00:24,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:00:24,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:00:24,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:00:24,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:00:24,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:00:24,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:00:24,741 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:00:24,741 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:00:24,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:00:24,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:00:24,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:00:24,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:00:24,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:00:24,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:00:24,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:00:24,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:00:24,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:00:24,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:00:24,744 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:00:24,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:00:24,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:00:24,745 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:00:24,745 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:00:24,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:00:24,745 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_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efc4103a673d30f5c3fd98741c7d56d84f1ec5a0e9e3b77a4d9f9d9493ec5192 [2023-12-02 13:00:24,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:00:24,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:00:24,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:00:24,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:00:24,984 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:00:24,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c [2023-12-02 13:00:27,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:00:27,963 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:00:27,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c [2023-12-02 13:00:27,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/data/03079ebd0/30d8297d1d55419d866f20cb16d843c7/FLAGb755bf2cd [2023-12-02 13:00:27,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/data/03079ebd0/30d8297d1d55419d866f20cb16d843c7 [2023-12-02 13:00:27,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:00:27,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:00:27,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:27,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:00:27,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:00:27,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:27" (1/1) ... [2023-12-02 13:00:27,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a970ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:27, skipping insertion in model container [2023-12-02 13:00:27,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:27" (1/1) ... [2023-12-02 13:00:28,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:00:28,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:28,208 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:00:28,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:28,245 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:00:28,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28 WrapperNode [2023-12-02 13:00:28,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:28,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:00:28,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:00:28,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:00:28,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,288 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2023-12-02 13:00:28,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:00:28,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:00:28,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:00:28,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:00:28,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:00:28,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:00:28,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:00:28,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:00:28,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (1/1) ... [2023-12-02 13:00:28,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:00:28,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:28,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:00:28,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:00:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:00:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:00:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:00:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:00:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:00:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:00:28,463 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:00:28,466 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:00:28,747 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:00:28,787 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:00:28,787 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 13:00:28,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:00:28 BoogieIcfgContainer [2023-12-02 13:00:28,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:00:28,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:00:28,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:00:28,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:00:28,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:00:27" (1/3) ... [2023-12-02 13:00:28,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75033366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:00:28, skipping insertion in model container [2023-12-02 13:00:28,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:28" (2/3) ... [2023-12-02 13:00:28,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75033366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:00:28, skipping insertion in model container [2023-12-02 13:00:28,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:00:28" (3/3) ... [2023-12-02 13:00:28,798 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound100.c [2023-12-02 13:00:28,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:00:28,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-12-02 13:00:28,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:00:28,871 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;@7794e33a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:00:28,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-12-02 13:00:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 66 states have internal predecessors, (73), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:00:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 13:00:28,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:28,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 13:00:28,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:28,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash 178234, now seen corresponding path program 1 times [2023-12-02 13:00:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705354825] [2023-12-02 13:00:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:29,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:29,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705354825] [2023-12-02 13:00:29,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705354825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:29,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:29,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:29,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556264656] [2023-12-02 13:00:29,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:00:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:00:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:00:29,119 INFO L87 Difference]: Start difference. First operand has 75 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 66 states have internal predecessors, (73), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:29,215 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2023-12-02 13:00:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:00:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 13:00:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:29,225 INFO L225 Difference]: With dead ends: 133 [2023-12-02 13:00:29,225 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 13:00:29,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:00:29,244 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:29,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 230 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:00:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 13:00:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-02 13:00:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 68 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:00:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2023-12-02 13:00:29,283 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 3 [2023-12-02 13:00:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:29,284 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2023-12-02 13:00:29,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2023-12-02 13:00:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 13:00:29,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:29,286 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:29,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:00:29,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:29,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1601283050, now seen corresponding path program 1 times [2023-12-02 13:00:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:29,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835402960] [2023-12-02 13:00:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:29,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:29,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054259385] [2023-12-02 13:00:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:29,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:29,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:29,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:00:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:29,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:29,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:00:29,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:29,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835402960] [2023-12-02 13:00:29,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:29,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054259385] [2023-12-02 13:00:29,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054259385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:29,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:29,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104882785] [2023-12-02 13:00:29,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:29,482 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 13:00:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:29,573 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2023-12-02 13:00:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:29,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 12 [2023-12-02 13:00:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:29,575 INFO L225 Difference]: With dead ends: 111 [2023-12-02 13:00:29,576 INFO L226 Difference]: Without dead ends: 107 [2023-12-02 13:00:29,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:29,577 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 47 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:29,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 84 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-02 13:00:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2023-12-02 13:00:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 80 states have internal predecessors, (96), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:00:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2023-12-02 13:00:29,592 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 12 [2023-12-02 13:00:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:29,594 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2023-12-02 13:00:29,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 13:00:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2023-12-02 13:00:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 13:00:29,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:29,595 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:29,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:00:29,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:29,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:29,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1899833061, now seen corresponding path program 1 times [2023-12-02 13:00:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:29,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329267591] [2023-12-02 13:00:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:29,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:29,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:29,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95287516] [2023-12-02 13:00:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:29,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:29,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:29,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:29,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:00:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:29,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:29,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:00:29,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:29,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:29,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329267591] [2023-12-02 13:00:29,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:29,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95287516] [2023-12-02 13:00:29,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95287516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:29,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:29,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397136583] [2023-12-02 13:00:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:29,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:29,921 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2023-12-02 13:00:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:30,022 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2023-12-02 13:00:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2023-12-02 13:00:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:30,025 INFO L225 Difference]: With dead ends: 164 [2023-12-02 13:00:30,025 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 13:00:30,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:30,027 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 50 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:30,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 123 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 13:00:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2023-12-02 13:00:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.7395833333333333) internal successors, (167), 121 states have internal predecessors, (167), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 13:00:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 195 transitions. [2023-12-02 13:00:30,050 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 195 transitions. Word has length 13 [2023-12-02 13:00:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:30,050 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 195 transitions. [2023-12-02 13:00:30,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2023-12-02 13:00:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 195 transitions. [2023-12-02 13:00:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:00:30,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:30,052 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:30,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:00:30,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:30,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:30,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash 892086673, now seen corresponding path program 1 times [2023-12-02 13:00:30,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:30,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234086057] [2023-12-02 13:00:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:30,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150717065] [2023-12-02 13:00:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:30,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:30,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:30,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:00:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:30,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:30,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:30,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:30,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234086057] [2023-12-02 13:00:30,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150717065] [2023-12-02 13:00:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150717065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:30,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612513667] [2023-12-02 13:00:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:30,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:30,361 INFO L87 Difference]: Start difference. First operand 137 states and 195 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:30,415 INFO L93 Difference]: Finished difference Result 153 states and 202 transitions. [2023-12-02 13:00:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-12-02 13:00:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:30,417 INFO L225 Difference]: With dead ends: 153 [2023-12-02 13:00:30,418 INFO L226 Difference]: Without dead ends: 151 [2023-12-02 13:00:30,418 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 [2023-12-02 13:00:30,419 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:30,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 95 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:00:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-02 13:00:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2023-12-02 13:00:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 96 states have (on average 1.6979166666666667) internal successors, (163), 120 states have internal predecessors, (163), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 13:00:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 191 transitions. [2023-12-02 13:00:30,437 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 191 transitions. Word has length 18 [2023-12-02 13:00:30,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:30,438 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 191 transitions. [2023-12-02 13:00:30,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 191 transitions. [2023-12-02 13:00:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 13:00:30,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:30,439 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:30,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:00:30,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:30,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:30,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1884881650, now seen corresponding path program 1 times [2023-12-02 13:00:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:30,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919453681] [2023-12-02 13:00:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:30,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313883261] [2023-12-02 13:00:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:30,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:30,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:30,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:00:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:30,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:30,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:30,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:30,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919453681] [2023-12-02 13:00:30,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313883261] [2023-12-02 13:00:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313883261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:30,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:00:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123953372] [2023-12-02 13:00:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:00:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:00:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:00:30,758 INFO L87 Difference]: Start difference. First operand 136 states and 191 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:30,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:30,821 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2023-12-02 13:00:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:00:30,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-12-02 13:00:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:30,823 INFO L225 Difference]: With dead ends: 136 [2023-12-02 13:00:30,823 INFO L226 Difference]: Without dead ends: 134 [2023-12-02 13:00:30,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:00:30,825 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 67 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:30,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 180 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:00:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-02 13:00:30,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-12-02 13:00:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 96 states have (on average 1.6458333333333333) internal successors, (158), 118 states have internal predecessors, (158), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 13:00:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2023-12-02 13:00:30,840 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 19 [2023-12-02 13:00:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:30,841 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2023-12-02 13:00:30,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2023-12-02 13:00:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 13:00:30,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:30,842 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:30,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:00:31,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:31,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:31,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1884883156, now seen corresponding path program 1 times [2023-12-02 13:00:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259914458] [2023-12-02 13:00:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:31,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:31,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:31,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133991221] [2023-12-02 13:00:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:31,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:31,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:31,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:31,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:00:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:31,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:00:31,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:31,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:31,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259914458] [2023-12-02 13:00:31,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133991221] [2023-12-02 13:00:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133991221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:31,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:31,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178247067] [2023-12-02 13:00:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:31,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:31,129 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:31,198 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2023-12-02 13:00:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-12-02 13:00:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:31,200 INFO L225 Difference]: With dead ends: 155 [2023-12-02 13:00:31,200 INFO L226 Difference]: Without dead ends: 153 [2023-12-02 13:00:31,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:31,201 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:31,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 104 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-02 13:00:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2023-12-02 13:00:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 96 states have (on average 1.6145833333333333) internal successors, (155), 118 states have internal predecessors, (155), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 13:00:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2023-12-02 13:00:31,215 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 19 [2023-12-02 13:00:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:31,215 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2023-12-02 13:00:31,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2023-12-02 13:00:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 13:00:31,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:31,216 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:31,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:00:31,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:31,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:31,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1698210910, now seen corresponding path program 1 times [2023-12-02 13:00:31,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:31,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900273929] [2023-12-02 13:00:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:31,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824903637] [2023-12-02 13:00:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:31,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:31,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:00:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:31,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:31,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:31,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:31,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:31,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900273929] [2023-12-02 13:00:31,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824903637] [2023-12-02 13:00:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824903637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:31,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:00:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556344353] [2023-12-02 13:00:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:31,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:00:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:00:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:00:31,521 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:31,610 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2023-12-02 13:00:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:00:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-12-02 13:00:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:31,613 INFO L225 Difference]: With dead ends: 149 [2023-12-02 13:00:31,613 INFO L226 Difference]: Without dead ends: 140 [2023-12-02 13:00:31,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:00:31,619 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 14 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:31,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 314 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:00:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-02 13:00:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-12-02 13:00:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 97 states have (on average 1.5876288659793814) internal successors, (154), 119 states have internal predecessors, (154), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 13:00:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2023-12-02 13:00:31,639 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 20 [2023-12-02 13:00:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:31,640 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2023-12-02 13:00:31,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2023-12-02 13:00:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 13:00:31,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:31,641 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:31,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:00:31,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:31,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:31,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 106890820, now seen corresponding path program 1 times [2023-12-02 13:00:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950305788] [2023-12-02 13:00:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:31,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:31,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479951798] [2023-12-02 13:00:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:31,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:31,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:31,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:31,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:00:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:31,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:31,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:31,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:31,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950305788] [2023-12-02 13:00:31,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479951798] [2023-12-02 13:00:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479951798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352387379] [2023-12-02 13:00:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:31,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:31,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:31,988 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:32,065 INFO L93 Difference]: Finished difference Result 202 states and 270 transitions. [2023-12-02 13:00:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-02 13:00:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:32,069 INFO L225 Difference]: With dead ends: 202 [2023-12-02 13:00:32,069 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 13:00:32,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:32,070 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 49 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:32,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 13:00:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 172. [2023-12-02 13:00:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.6046511627906976) internal successors, (207), 151 states have internal predecessors, (207), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:00:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 243 transitions. [2023-12-02 13:00:32,086 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 243 transitions. Word has length 22 [2023-12-02 13:00:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:32,086 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 243 transitions. [2023-12-02 13:00:32,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 243 transitions. [2023-12-02 13:00:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 13:00:32,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:32,087 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:32,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:00:32,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:32,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:32,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash -981351783, now seen corresponding path program 1 times [2023-12-02 13:00:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:32,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442377485] [2023-12-02 13:00:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:32,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:32,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:32,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330859561] [2023-12-02 13:00:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:32,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:32,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:32,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:32,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:00:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:32,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:32,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:32,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:32,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442377485] [2023-12-02 13:00:32,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330859561] [2023-12-02 13:00:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330859561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:32,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:32,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:32,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252078813] [2023-12-02 13:00:32,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:32,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:32,429 INFO L87 Difference]: Start difference. First operand 172 states and 243 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:32,508 INFO L93 Difference]: Finished difference Result 202 states and 266 transitions. [2023-12-02 13:00:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:32,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-12-02 13:00:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:32,510 INFO L225 Difference]: With dead ends: 202 [2023-12-02 13:00:32,510 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 13:00:32,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:32,511 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:32,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 78 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 13:00:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 172. [2023-12-02 13:00:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.573643410852713) internal successors, (203), 151 states have internal predecessors, (203), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:00:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 239 transitions. [2023-12-02 13:00:32,526 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 239 transitions. Word has length 23 [2023-12-02 13:00:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:32,526 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 239 transitions. [2023-12-02 13:00:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 239 transitions. [2023-12-02 13:00:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 13:00:32,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:32,527 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:32,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 13:00:32,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:32,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:32,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -357134106, now seen corresponding path program 1 times [2023-12-02 13:00:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500748404] [2023-12-02 13:00:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:32,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056081806] [2023-12-02 13:00:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:32,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:32,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:00:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:32,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:32,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:32,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:32,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500748404] [2023-12-02 13:00:32,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056081806] [2023-12-02 13:00:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056081806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:32,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:32,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:00:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356539007] [2023-12-02 13:00:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:32,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:00:32,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:00:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:00:32,853 INFO L87 Difference]: Start difference. First operand 172 states and 239 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:32,931 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2023-12-02 13:00:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:32,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-12-02 13:00:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:32,933 INFO L225 Difference]: With dead ends: 195 [2023-12-02 13:00:32,933 INFO L226 Difference]: Without dead ends: 194 [2023-12-02 13:00:32,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:00:32,934 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 93 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:32,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 87 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:32,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-02 13:00:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 172. [2023-12-02 13:00:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.5426356589147288) internal successors, (199), 151 states have internal predecessors, (199), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:00:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 235 transitions. [2023-12-02 13:00:32,952 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 235 transitions. Word has length 24 [2023-12-02 13:00:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:32,952 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 235 transitions. [2023-12-02 13:00:32,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 235 transitions. [2023-12-02 13:00:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 13:00:32,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:32,954 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:32,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:00:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 13:00:33,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:33,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash -203834760, now seen corresponding path program 1 times [2023-12-02 13:00:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:33,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587827126] [2023-12-02 13:00:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:33,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081863614] [2023-12-02 13:00:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:33,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:33,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:33,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:33,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:00:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:33,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:33,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:33,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:33,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587827126] [2023-12-02 13:00:33,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081863614] [2023-12-02 13:00:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081863614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [326632678] [2023-12-02 13:00:33,348 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:00:33,348 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:33,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:00:33,355 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:00:33,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:00:35,691 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:00:35,706 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:00:42,285 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4149#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387903)) (= (mod |ULTIMATE.start_main_~p~0#1| 2) 0) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) 4611686018427387903)) (= (+ |ULTIMATE.start_main_~d~0#1| (* (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 2)) 0) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) 4611686018427387904) (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 |ULTIMATE.start_main_#t~post6#1|) (<= (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387904))' at error location [2023-12-02 13:00:42,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:00:42,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:00:42,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-12-02 13:00:42,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564572548] [2023-12-02 13:00:42,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:42,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:00:42,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:42,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:00:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=546, Unknown=1, NotChecked=0, Total=650 [2023-12-02 13:00:42,287 INFO L87 Difference]: Start difference. First operand 172 states and 235 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 13:00:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:42,509 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2023-12-02 13:00:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:00:42,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 24 [2023-12-02 13:00:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:42,512 INFO L225 Difference]: With dead ends: 303 [2023-12-02 13:00:42,512 INFO L226 Difference]: Without dead ends: 221 [2023-12-02 13:00:42,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=176, Invalid=879, Unknown=1, NotChecked=0, Total=1056 [2023-12-02 13:00:42,514 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 71 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:42,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 351 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-02 13:00:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2023-12-02 13:00:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 156 states have (on average 1.5064102564102564) internal successors, (235), 178 states have internal predecessors, (235), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 13:00:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2023-12-02 13:00:42,529 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 24 [2023-12-02 13:00:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:42,530 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2023-12-02 13:00:42,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 13:00:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2023-12-02 13:00:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 13:00:42,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:42,531 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:42,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:00:42,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:42,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:42,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1813744699, now seen corresponding path program 1 times [2023-12-02 13:00:42,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:42,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626972828] [2023-12-02 13:00:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:42,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510118008] [2023-12-02 13:00:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:42,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:42,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:42,747 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:42,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 13:00:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:42,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:00:42,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:00:42,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:42,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626972828] [2023-12-02 13:00:42,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510118008] [2023-12-02 13:00:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510118008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:42,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:42,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054083486] [2023-12-02 13:00:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:42,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:42,860 INFO L87 Difference]: Start difference. First operand 207 states and 283 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:42,930 INFO L93 Difference]: Finished difference Result 229 states and 298 transitions. [2023-12-02 13:00:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-02 13:00:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:42,932 INFO L225 Difference]: With dead ends: 229 [2023-12-02 13:00:42,933 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 13:00:42,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:42,934 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:42,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 83 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:00:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 13:00:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 210. [2023-12-02 13:00:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 159 states have (on average 1.471698113207547) internal successors, (234), 181 states have internal predecessors, (234), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 13:00:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 282 transitions. [2023-12-02 13:00:42,953 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 282 transitions. Word has length 25 [2023-12-02 13:00:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:42,953 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 282 transitions. [2023-12-02 13:00:42,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:00:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 282 transitions. [2023-12-02 13:00:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 13:00:42,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:42,955 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:42,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 13:00:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:43,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:43,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1351566819, now seen corresponding path program 1 times [2023-12-02 13:00:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080393568] [2023-12-02 13:00:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:43,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:43,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30438860] [2023-12-02 13:00:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:43,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:43,167 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:43,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 13:00:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:43,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:00:43,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 13:00:43,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:43,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:43,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080393568] [2023-12-02 13:00:43,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:43,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30438860] [2023-12-02 13:00:43,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30438860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:00:43,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896410918] [2023-12-02 13:00:43,440 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:00:43,440 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:43,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:00:43,441 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:00:43,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:00:45,033 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:00:45,039 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:00:47,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5527#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 13:00:47,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:00:47,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:00:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-12-02 13:00:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685613912] [2023-12-02 13:00:47,702 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:47,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:00:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:00:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-02 13:00:47,704 INFO L87 Difference]: Start difference. First operand 210 states and 282 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:00:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:47,919 INFO L93 Difference]: Finished difference Result 301 states and 392 transitions. [2023-12-02 13:00:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:00:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-12-02 13:00:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:47,922 INFO L225 Difference]: With dead ends: 301 [2023-12-02 13:00:47,922 INFO L226 Difference]: Without dead ends: 297 [2023-12-02 13:00:47,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-02 13:00:47,923 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:47,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 132 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:00:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-02 13:00:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 266. [2023-12-02 13:00:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 209 states have (on average 1.4832535885167464) internal successors, (310), 231 states have internal predecessors, (310), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 13:00:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2023-12-02 13:00:47,946 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 33 [2023-12-02 13:00:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:47,947 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2023-12-02 13:00:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:00:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2023-12-02 13:00:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 13:00:47,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:47,948 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:47,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 13:00:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 13:00:48,150 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:48,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1643152196, now seen corresponding path program 1 times [2023-12-02 13:00:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663212751] [2023-12-02 13:00:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:48,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389060074] [2023-12-02 13:00:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:48,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:48,162 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:48,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:00:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:48,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:48,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 13:00:48,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:48,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663212751] [2023-12-02 13:00:48,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389060074] [2023-12-02 13:00:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389060074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:00:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038563293] [2023-12-02 13:00:48,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:48,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:00:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:00:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:00:48,256 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:00:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:48,558 INFO L93 Difference]: Finished difference Result 289 states and 383 transitions. [2023-12-02 13:00:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:00:48,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2023-12-02 13:00:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:48,560 INFO L225 Difference]: With dead ends: 289 [2023-12-02 13:00:48,560 INFO L226 Difference]: Without dead ends: 284 [2023-12-02 13:00:48,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:00:48,561 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 80 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:48,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 123 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:00:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-02 13:00:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 263. [2023-12-02 13:00:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 206 states have (on average 1.4368932038834952) internal successors, (296), 228 states have internal predecessors, (296), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 13:00:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 356 transitions. [2023-12-02 13:00:48,578 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 356 transitions. Word has length 37 [2023-12-02 13:00:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:48,578 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 356 transitions. [2023-12-02 13:00:48,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:00:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 356 transitions. [2023-12-02 13:00:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 13:00:48,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:48,580 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 13:00:48,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:00:48,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 13:00:48,784 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:48,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2121567918, now seen corresponding path program 1 times [2023-12-02 13:00:48,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267688143] [2023-12-02 13:00:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:48,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:48,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:48,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293853793] [2023-12-02 13:00:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:48,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:48,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:48,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:48,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 13:00:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:48,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:00:48,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 13:00:48,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 13:00:48,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:48,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267688143] [2023-12-02 13:00:48,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293853793] [2023-12-02 13:00:48,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293853793] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [940409815] [2023-12-02 13:00:48,950 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:00:48,950 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:48,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:00:48,951 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:00:48,951 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:00:50,360 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:00:50,366 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:00,148 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7202#(and (<= 1 |#StackHeapBarrier|) (<= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~d~0#1|))' at error location [2023-12-02 13:01:00,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:01:00,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:01:00,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 13:01:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469119101] [2023-12-02 13:01:00,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:01:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:01:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:01:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=464, Unknown=1, NotChecked=0, Total=552 [2023-12-02 13:01:00,151 INFO L87 Difference]: Start difference. First operand 263 states and 356 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 13:01:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:00,407 INFO L93 Difference]: Finished difference Result 344 states and 472 transitions. [2023-12-02 13:01:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:01:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 39 [2023-12-02 13:01:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:00,410 INFO L225 Difference]: With dead ends: 344 [2023-12-02 13:01:00,410 INFO L226 Difference]: Without dead ends: 342 [2023-12-02 13:01:00,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=103, Invalid=546, Unknown=1, NotChecked=0, Total=650 [2023-12-02 13:01:00,411 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 247 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:00,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 149 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:01:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-02 13:01:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 208. [2023-12-02 13:01:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 159 states have (on average 1.3836477987421383) internal successors, (220), 179 states have internal predecessors, (220), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 13:01:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 268 transitions. [2023-12-02 13:01:00,427 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 268 transitions. Word has length 39 [2023-12-02 13:01:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:00,428 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 268 transitions. [2023-12-02 13:01:00,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 13:01:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 268 transitions. [2023-12-02 13:01:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 13:01:00,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:00,429 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:00,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 13:01:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 13:01:00,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:00,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1344142620, now seen corresponding path program 1 times [2023-12-02 13:01:00,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:00,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562429046] [2023-12-02 13:01:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:00,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:00,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967483213] [2023-12-02 13:01:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:00,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:00,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 13:01:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:00,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:01:00,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 13:01:00,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 13:01:00,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:00,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562429046] [2023-12-02 13:01:00,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:00,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967483213] [2023-12-02 13:01:00,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967483213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:01:00,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359066461] [2023-12-02 13:01:00,814 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 13:01:00,814 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:00,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:00,814 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:00,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:01,997 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:01:02,004 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:04,560 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8119#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (= |ULTIMATE.start_main_~q~0#1| 0) (= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~d~0#1|) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~d~0#1|))' at error location [2023-12-02 13:01:04,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:01:04,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:01:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-12-02 13:01:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492024597] [2023-12-02 13:01:04,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:01:04,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:01:04,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:01:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2023-12-02 13:01:04,561 INFO L87 Difference]: Start difference. First operand 208 states and 268 transitions. Second operand has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 13:01:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:04,900 INFO L93 Difference]: Finished difference Result 254 states and 319 transitions. [2023-12-02 13:01:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 13:01:04,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 40 [2023-12-02 13:01:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:04,902 INFO L225 Difference]: With dead ends: 254 [2023-12-02 13:01:04,902 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 13:01:04,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=289, Invalid=1781, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 13:01:04,903 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 88 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:04,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 654 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:01:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 13:01:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 231. [2023-12-02 13:01:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 177 states have (on average 1.384180790960452) internal successors, (245), 197 states have internal predecessors, (245), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:01:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 299 transitions. [2023-12-02 13:01:04,923 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 299 transitions. Word has length 40 [2023-12-02 13:01:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:04,923 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 299 transitions. [2023-12-02 13:01:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 13:01:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 299 transitions. [2023-12-02 13:01:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 13:01:04,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:04,925 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:04,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 13:01:05,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:05,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:05,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash -369237451, now seen corresponding path program 1 times [2023-12-02 13:01:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565319315] [2023-12-02 13:01:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:05,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:05,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782226386] [2023-12-02 13:01:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:05,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:05,133 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:05,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 13:01:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:05,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:01:05,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 13:01:05,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:05,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565319315] [2023-12-02 13:01:05,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782226386] [2023-12-02 13:01:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782226386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:05,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:05,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:01:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289460392] [2023-12-02 13:01:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:01:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:01:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:05,184 INFO L87 Difference]: Start difference. First operand 231 states and 299 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:05,224 INFO L93 Difference]: Finished difference Result 231 states and 299 transitions. [2023-12-02 13:01:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:01:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2023-12-02 13:01:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:05,226 INFO L225 Difference]: With dead ends: 231 [2023-12-02 13:01:05,226 INFO L226 Difference]: Without dead ends: 230 [2023-12-02 13:01:05,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:05,227 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:05,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:01:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-02 13:01:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2023-12-02 13:01:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 196 states have internal predecessors, (242), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:01:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2023-12-02 13:01:05,244 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 40 [2023-12-02 13:01:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:05,245 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2023-12-02 13:01:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2023-12-02 13:01:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 13:01:05,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:05,246 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:05,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 13:01:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:05,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:05,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1438541030, now seen corresponding path program 1 times [2023-12-02 13:01:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:05,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369412304] [2023-12-02 13:01:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:05,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752840879] [2023-12-02 13:01:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:05,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:05,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:05,461 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:05,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 13:01:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:05,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:01:05,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 13:01:05,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:05,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369412304] [2023-12-02 13:01:05,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752840879] [2023-12-02 13:01:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752840879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:05,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382494791] [2023-12-02 13:01:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:01:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:01:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:05,535 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:05,580 INFO L93 Difference]: Finished difference Result 327 states and 408 transitions. [2023-12-02 13:01:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:01:05,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-12-02 13:01:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:05,582 INFO L225 Difference]: With dead ends: 327 [2023-12-02 13:01:05,582 INFO L226 Difference]: Without dead ends: 238 [2023-12-02 13:01:05,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:05,584 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:05,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:01:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-02 13:01:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 230. [2023-12-02 13:01:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.3615819209039548) internal successors, (241), 196 states have internal predecessors, (241), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:01:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 295 transitions. [2023-12-02 13:01:05,599 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 295 transitions. Word has length 41 [2023-12-02 13:01:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:05,599 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 295 transitions. [2023-12-02 13:01:05,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 295 transitions. [2023-12-02 13:01:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:01:05,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:05,600 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-12-02 13:01:05,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 13:01:05,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 13:01:05,801 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:05,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1083573791, now seen corresponding path program 2 times [2023-12-02 13:01:05,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842975722] [2023-12-02 13:01:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:05,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356710558] [2023-12-02 13:01:05,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:01:05,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:05,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:05,811 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:05,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 13:01:05,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:01:05,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:01:05,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:01:05,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:01:06,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:06,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:06,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842975722] [2023-12-02 13:01:06,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:06,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356710558] [2023-12-02 13:01:06,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356710558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:01:06,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [696512219] [2023-12-02 13:01:06,092 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:01:06,092 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:06,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:06,092 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:06,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:07,194 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:01:07,199 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:09,631 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10425#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 13:01:09,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:01:09,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:01:09,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-12-02 13:01:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082628849] [2023-12-02 13:01:09,631 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:01:09,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:01:09,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:01:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:01:09,632 INFO L87 Difference]: Start difference. First operand 230 states and 295 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 13:01:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:09,858 INFO L93 Difference]: Finished difference Result 365 states and 462 transitions. [2023-12-02 13:01:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:01:09,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 53 [2023-12-02 13:01:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:09,861 INFO L225 Difference]: With dead ends: 365 [2023-12-02 13:01:09,861 INFO L226 Difference]: Without dead ends: 361 [2023-12-02 13:01:09,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:01:09,862 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 162 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:09,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 145 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:01:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-02 13:01:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 246. [2023-12-02 13:01:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 191 states have (on average 1.324607329842932) internal successors, (253), 210 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 13:01:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 311 transitions. [2023-12-02 13:01:09,887 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 311 transitions. Word has length 53 [2023-12-02 13:01:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:09,887 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 311 transitions. [2023-12-02 13:01:09,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 13:01:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 311 transitions. [2023-12-02 13:01:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 13:01:09,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:09,888 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:09,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 13:01:10,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:10,089 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:10,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1075591908, now seen corresponding path program 1 times [2023-12-02 13:01:10,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:10,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524613500] [2023-12-02 13:01:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:10,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151302934] [2023-12-02 13:01:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:10,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:10,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:10,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:10,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 13:01:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:10,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:01:10,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:01:10,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:10,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:10,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524613500] [2023-12-02 13:01:10,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:10,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151302934] [2023-12-02 13:01:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151302934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:10,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368530196] [2023-12-02 13:01:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:01:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:01:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:10,331 INFO L87 Difference]: Start difference. First operand 246 states and 311 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:01:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:10,445 INFO L93 Difference]: Finished difference Result 340 states and 433 transitions. [2023-12-02 13:01:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:01:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-12-02 13:01:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:10,448 INFO L225 Difference]: With dead ends: 340 [2023-12-02 13:01:10,448 INFO L226 Difference]: Without dead ends: 338 [2023-12-02 13:01:10,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:10,449 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:10,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 133 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:01:10,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-02 13:01:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 314. [2023-12-02 13:01:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 251 states have (on average 1.3585657370517927) internal successors, (341), 270 states have internal predecessors, (341), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 13:01:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 415 transitions. [2023-12-02 13:01:10,487 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 415 transitions. Word has length 61 [2023-12-02 13:01:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:10,488 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 415 transitions. [2023-12-02 13:01:10,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:01:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 415 transitions. [2023-12-02 13:01:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 13:01:10,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:10,490 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:10,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 13:01:10,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:10,690 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:10,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1016389095, now seen corresponding path program 1 times [2023-12-02 13:01:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:10,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911896498] [2023-12-02 13:01:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:10,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:10,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:10,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859881143] [2023-12-02 13:01:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:10,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:10,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:10,701 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:10,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 13:01:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:10,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:01:10,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 13:01:10,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:10,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:10,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911896498] [2023-12-02 13:01:10,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:10,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859881143] [2023-12-02 13:01:10,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859881143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:10,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:10,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:01:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512332555] [2023-12-02 13:01:10,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:10,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:01:10,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:01:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:10,897 INFO L87 Difference]: Start difference. First operand 314 states and 415 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:11,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:11,139 INFO L93 Difference]: Finished difference Result 332 states and 429 transitions. [2023-12-02 13:01:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:01:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2023-12-02 13:01:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:11,142 INFO L225 Difference]: With dead ends: 332 [2023-12-02 13:01:11,142 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 13:01:11,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:11,143 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 61 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:11,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 125 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:01:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 13:01:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 320. [2023-12-02 13:01:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 257 states have (on average 1.33852140077821) internal successors, (344), 276 states have internal predecessors, (344), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 13:01:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 418 transitions. [2023-12-02 13:01:11,172 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 418 transitions. Word has length 62 [2023-12-02 13:01:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:11,172 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 418 transitions. [2023-12-02 13:01:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 418 transitions. [2023-12-02 13:01:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 13:01:11,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:11,173 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:11,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 13:01:11,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 13:01:11,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:11,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1443290746, now seen corresponding path program 1 times [2023-12-02 13:01:11,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:11,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320011156] [2023-12-02 13:01:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:11,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:11,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916194020] [2023-12-02 13:01:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:11,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:11,385 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:11,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 13:01:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:11,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:01:11,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 13:01:11,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:11,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320011156] [2023-12-02 13:01:11,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916194020] [2023-12-02 13:01:11,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916194020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:11,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:11,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:11,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211580074] [2023-12-02 13:01:11,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:01:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:01:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:11,546 INFO L87 Difference]: Start difference. First operand 320 states and 418 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:11,739 INFO L93 Difference]: Finished difference Result 329 states and 422 transitions. [2023-12-02 13:01:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:01:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2023-12-02 13:01:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:11,741 INFO L225 Difference]: With dead ends: 329 [2023-12-02 13:01:11,742 INFO L226 Difference]: Without dead ends: 327 [2023-12-02 13:01:11,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:11,743 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 45 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:11,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 84 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:01:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-02 13:01:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 322. [2023-12-02 13:01:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 259 states have (on average 1.3166023166023166) internal successors, (341), 278 states have internal predecessors, (341), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 13:01:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 415 transitions. [2023-12-02 13:01:11,777 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 415 transitions. Word has length 63 [2023-12-02 13:01:11,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:11,778 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 415 transitions. [2023-12-02 13:01:11,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:01:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 415 transitions. [2023-12-02 13:01:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 13:01:11,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:11,779 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:11,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 13:01:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 13:01:11,984 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:11,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash -490027172, now seen corresponding path program 1 times [2023-12-02 13:01:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700930344] [2023-12-02 13:01:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:11,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:11,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209147589] [2023-12-02 13:01:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:11,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:11,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:11,995 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:11,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 13:01:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:12,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:01:12,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 13:01:12,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:01:12,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:12,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700930344] [2023-12-02 13:01:12,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209147589] [2023-12-02 13:01:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209147589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:01:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1435956721] [2023-12-02 13:01:12,270 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 13:01:12,270 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:12,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:12,271 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:12,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:13,972 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:01:14,146 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:01:15,378 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:01:15,385 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:24,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14475#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0) (exists ((v_~counter~0_56 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (= v_~counter~0_56 100) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (= ~counter~0 101) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))))' at error location [2023-12-02 13:01:24,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:01:24,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:01:24,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-02 13:01:24,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049126632] [2023-12-02 13:01:24,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:01:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:01:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:01:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2291, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 13:01:24,106 INFO L87 Difference]: Start difference. First operand 322 states and 415 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-02 13:01:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:24,606 INFO L93 Difference]: Finished difference Result 700 states and 891 transitions. [2023-12-02 13:01:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 13:01:24,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 68 [2023-12-02 13:01:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:24,609 INFO L225 Difference]: With dead ends: 700 [2023-12-02 13:01:24,609 INFO L226 Difference]: Without dead ends: 489 [2023-12-02 13:01:24,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=473, Invalid=4083, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 13:01:24,612 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 170 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:24,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 529 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:01:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-02 13:01:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 441. [2023-12-02 13:01:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 366 states have (on average 1.2978142076502732) internal successors, (475), 385 states have internal predecessors, (475), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-02 13:01:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 569 transitions. [2023-12-02 13:01:24,638 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 569 transitions. Word has length 68 [2023-12-02 13:01:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:24,638 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 569 transitions. [2023-12-02 13:01:24,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-02 13:01:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 569 transitions. [2023-12-02 13:01:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 13:01:24,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:24,639 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:24,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 13:01:24,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 13:01:24,840 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:24,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash -490027154, now seen corresponding path program 1 times [2023-12-02 13:01:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231741166] [2023-12-02 13:01:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:24,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367605855] [2023-12-02 13:01:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:24,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:24,850 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:24,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 13:01:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:24,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:01:24,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:01:25,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:25,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231741166] [2023-12-02 13:01:25,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367605855] [2023-12-02 13:01:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367605855] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:01:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593388094] [2023-12-02 13:01:25,890 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:01:25,890 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:25,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:25,890 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:25,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:27,332 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:01:27,422 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:01:28,473 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:01:28,480 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:01,942 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16133#(and (exists ((v_~counter~0_66 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (= ~counter~0 (+ v_~counter~0_66 1)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775809) 0) (<= ~counter~0 100))' at error location [2023-12-02 13:02:01,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:01,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:02:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:02:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981091106] [2023-12-02 13:02:01,942 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:01,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:02:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:02:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1390, Unknown=4, NotChecked=0, Total=1640 [2023-12-02 13:02:01,944 INFO L87 Difference]: Start difference. First operand 441 states and 569 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:02:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:02,228 INFO L93 Difference]: Finished difference Result 521 states and 652 transitions. [2023-12-02 13:02:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:02:02,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-12-02 13:02:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:02,231 INFO L225 Difference]: With dead ends: 521 [2023-12-02 13:02:02,231 INFO L226 Difference]: Without dead ends: 372 [2023-12-02 13:02:02,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=254, Invalid=1464, Unknown=4, NotChecked=0, Total=1722 [2023-12-02 13:02:02,233 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 104 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:02,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 189 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:02:02,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-02 13:02:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 359. [2023-12-02 13:02:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 290 states have (on average 1.2793103448275862) internal successors, (371), 309 states have internal predecessors, (371), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 13:02:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 453 transitions. [2023-12-02 13:02:02,266 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 453 transitions. Word has length 68 [2023-12-02 13:02:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:02,267 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 453 transitions. [2023-12-02 13:02:02,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:02:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 453 transitions. [2023-12-02 13:02:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 13:02:02,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:02,268 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:02,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 13:02:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 13:02:02,468 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:02:02,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1989027503, now seen corresponding path program 1 times [2023-12-02 13:02:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47202115] [2023-12-02 13:02:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:02,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:02,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337072734] [2023-12-02 13:02:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:02,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:02,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:02,477 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:02,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 13:02:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:02,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:02:02,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:02:02,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:03,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47202115] [2023-12-02 13:02:03,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337072734] [2023-12-02 13:02:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337072734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:02:03,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [215838693] [2023-12-02 13:02:03,455 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:02:03,455 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:03,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:03,455 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:03,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:04,962 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:02:05,113 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:02:06,143 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:02:06,150 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:17,183 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17468#(and (<= ~counter~0 100) (exists ((v_~counter~0_76 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (= ~counter~0 (+ v_~counter~0_76 1)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 13:02:17,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:17,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:02:17,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:02:17,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210132174] [2023-12-02 13:02:17,184 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:17,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:02:17,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:17,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:02:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 13:02:17,185 INFO L87 Difference]: Start difference. First operand 359 states and 453 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:02:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:17,462 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2023-12-02 13:02:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:02:17,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2023-12-02 13:02:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:17,464 INFO L225 Difference]: With dead ends: 375 [2023-12-02 13:02:17,464 INFO L226 Difference]: Without dead ends: 374 [2023-12-02 13:02:17,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 13:02:17,466 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:17,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 154 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:02:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-02 13:02:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 359. [2023-12-02 13:02:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 290 states have (on average 1.2758620689655173) internal successors, (370), 309 states have internal predecessors, (370), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 13:02:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 452 transitions. [2023-12-02 13:02:17,491 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 452 transitions. Word has length 69 [2023-12-02 13:02:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:17,491 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 452 transitions. [2023-12-02 13:02:17,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:02:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 452 transitions. [2023-12-02 13:02:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 13:02:17,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:17,493 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:17,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-02 13:02:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:17,698 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:02:17,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1530310544, now seen corresponding path program 1 times [2023-12-02 13:02:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:17,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559630229] [2023-12-02 13:02:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:17,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013693194] [2023-12-02 13:02:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:17,710 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:17,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 13:02:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:17,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:02:17,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 13:02:17,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:02:17,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559630229] [2023-12-02 13:02:17,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013693194] [2023-12-02 13:02:17,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013693194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:17,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:17,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:02:17,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405590906] [2023-12-02 13:02:17,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:02:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:02:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:02:17,801 INFO L87 Difference]: Start difference. First operand 359 states and 452 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:02:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:18,003 INFO L93 Difference]: Finished difference Result 379 states and 475 transitions. [2023-12-02 13:02:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:02:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2023-12-02 13:02:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:18,006 INFO L225 Difference]: With dead ends: 379 [2023-12-02 13:02:18,006 INFO L226 Difference]: Without dead ends: 377 [2023-12-02 13:02:18,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:02:18,006 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:18,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 80 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:02:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-02 13:02:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2023-12-02 13:02:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 300 states have (on average 1.2633333333333334) internal successors, (379), 318 states have internal predecessors, (379), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 13:02:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 461 transitions. [2023-12-02 13:02:18,043 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 461 transitions. Word has length 70 [2023-12-02 13:02:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:18,043 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 461 transitions. [2023-12-02 13:02:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 13:02:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 461 transitions. [2023-12-02 13:02:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 13:02:18,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:18,045 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-12-02 13:02:18,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 13:02:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 13:02:18,250 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:02:18,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1330593057, now seen corresponding path program 3 times [2023-12-02 13:02:18,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:18,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435574165] [2023-12-02 13:02:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:18,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:18,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:18,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828348759] [2023-12-02 13:02:18,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:02:18,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:18,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:18,258 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:18,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 13:02:18,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:02:18,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:02:18,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:02:18,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-02 13:02:18,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:18,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435574165] [2023-12-02 13:02:18,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828348759] [2023-12-02 13:02:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828348759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:02:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1209958846] [2023-12-02 13:02:18,522 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:02:18,522 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:18,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:18,522 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:18,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:19,653 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:02:19,659 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:24,886 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19754#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 13:02:24,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:24,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:02:24,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:02:24,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287211658] [2023-12-02 13:02:24,887 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:24,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:02:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:24,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:02:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-12-02 13:02:24,888 INFO L87 Difference]: Start difference. First operand 368 states and 461 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 13:02:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:25,235 INFO L93 Difference]: Finished difference Result 543 states and 680 transitions. [2023-12-02 13:02:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:02:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 73 [2023-12-02 13:02:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:25,238 INFO L225 Difference]: With dead ends: 543 [2023-12-02 13:02:25,238 INFO L226 Difference]: Without dead ends: 539 [2023-12-02 13:02:25,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-12-02 13:02:25,239 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 216 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:25,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 180 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:02:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-02 13:02:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 343. [2023-12-02 13:02:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 277 states have (on average 1.2743682310469313) internal successors, (353), 295 states have internal predecessors, (353), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-02 13:02:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 431 transitions. [2023-12-02 13:02:25,275 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 431 transitions. Word has length 73 [2023-12-02 13:02:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:25,276 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 431 transitions. [2023-12-02 13:02:25,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 13:02:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 431 transitions. [2023-12-02 13:02:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 13:02:25,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:25,277 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:25,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 13:02:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 13:02:25,477 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:02:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 194986705, now seen corresponding path program 1 times [2023-12-02 13:02:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908571187] [2023-12-02 13:02:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:25,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:25,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060896571] [2023-12-02 13:02:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:25,485 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 13:02:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:25,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 13:02:25,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:02:26,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:02:29,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908571187] [2023-12-02 13:02:29,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060896571] [2023-12-02 13:02:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060896571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:02:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961994217] [2023-12-02 13:02:29,925 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:02:29,925 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:29,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:29,925 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:29,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:31,335 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:02:31,423 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:02:32,468 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:02:32,474 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:57,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21245#(and (exists ((v_~counter~0_95 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_95 1)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= ~counter~0 100) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 13:02:57,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:57,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:02:57,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 13:02:57,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409387140] [2023-12-02 13:02:57,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:57,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:02:57,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:57,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:02:57,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1805, Unknown=5, NotChecked=0, Total=2070 [2023-12-02 13:02:57,344 INFO L87 Difference]: Start difference. First operand 343 states and 431 transitions. Second operand has 14 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 13:03:02,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:03:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:09,246 INFO L93 Difference]: Finished difference Result 431 states and 526 transitions. [2023-12-02 13:03:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 13:03:09,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 71 [2023-12-02 13:03:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:09,249 INFO L225 Difference]: With dead ends: 431 [2023-12-02 13:03:09,249 INFO L226 Difference]: Without dead ends: 430 [2023-12-02 13:03:09,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=374, Invalid=2591, Unknown=5, NotChecked=0, Total=2970 [2023-12-02 13:03:09,250 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 373 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:09,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 322 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2023-12-02 13:03:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-02 13:03:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 349. [2023-12-02 13:03:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 283 states have (on average 1.2685512367491165) internal successors, (359), 301 states have internal predecessors, (359), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-02 13:03:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 437 transitions. [2023-12-02 13:03:09,292 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 437 transitions. Word has length 71 [2023-12-02 13:03:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:09,292 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 437 transitions. [2023-12-02 13:03:09,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 13:03:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 437 transitions. [2023-12-02 13:03:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 13:03:09,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:09,293 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:03:09,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 13:03:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 13:03:09,494 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:03:09,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 925007152, now seen corresponding path program 1 times [2023-12-02 13:03:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:09,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860027765] [2023-12-02 13:03:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:09,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:09,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:03:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402763291] [2023-12-02 13:03:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:09,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:03:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:03:09,505 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:03:09,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 13:03:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:09,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:03:09,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:03:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 13:03:09,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:03:10,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:10,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860027765] [2023-12-02 13:03:10,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:03:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402763291] [2023-12-02 13:03:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402763291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:03:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [360157964] [2023-12-02 13:03:10,929 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 13:03:10,929 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:03:10,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:03:10,930 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:03:10,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:03:12,310 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:03:12,398 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:03:13,372 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:03:13,379 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:03:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [360157964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:03:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [6] total 38 [2023-12-02 13:03:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668271388] [2023-12-02 13:03:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 13:03:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 13:03:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1540, Unknown=3, NotChecked=0, Total=1806 [2023-12-02 13:03:34,373 INFO L87 Difference]: Start difference. First operand 349 states and 437 transitions. Second operand has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 13:03:35,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:03:38,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:03:46,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:03:54,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:04:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:00,064 INFO L93 Difference]: Finished difference Result 477 states and 595 transitions. [2023-12-02 13:04:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 13:04:00,065 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 81 [2023-12-02 13:04:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:00,067 INFO L225 Difference]: With dead ends: 477 [2023-12-02 13:04:00,067 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 13:04:00,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=841, Invalid=5797, Unknown=4, NotChecked=0, Total=6642 [2023-12-02 13:04:00,070 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 180 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 65 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:00,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 180 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1156 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2023-12-02 13:04:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 13:04:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 359. [2023-12-02 13:04:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 298 states have (on average 1.2718120805369129) internal successors, (379), 314 states have internal predecessors, (379), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 13:04:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 453 transitions. [2023-12-02 13:04:00,121 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 453 transitions. Word has length 81 [2023-12-02 13:04:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:00,122 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 453 transitions. [2023-12-02 13:04:00,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 13:04:00,122 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 453 transitions. [2023-12-02 13:04:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 13:04:00,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:00,123 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-02 13:04:00,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 13:04:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 13:04:00,323 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:04:00,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash -921316163, now seen corresponding path program 1 times [2023-12-02 13:04:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:00,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740464805] [2023-12-02 13:04:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:00,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:00,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101074277] [2023-12-02 13:04:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:00,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:00,333 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:00,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 13:04:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:00,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:04:00,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:04:00,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 13:04:00,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:00,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740464805] [2023-12-02 13:04:00,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:00,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101074277] [2023-12-02 13:04:00,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101074277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:04:00,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1487547289] [2023-12-02 13:04:00,651 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 13:04:00,651 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:00,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:00,651 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:00,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:01,733 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 13:04:01,739 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:05,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24191#(and (<= 1 |#StackHeapBarrier|) (<= (div |ULTIMATE.start_main_~p~0#1| 2) 4611686018427387903) (= (mod |ULTIMATE.start_main_~p~0#1| 2) 0) (<= 0 (+ (div |ULTIMATE.start_main_~p~0#1| 2) 4611686018427387904)) (= |ULTIMATE.start_main_~d~0#1| (* (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 2)) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387903) (<= (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= ~counter~0 2147483647) (<= 0 (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387904)))' at error location [2023-12-02 13:04:05,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:05,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:04:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-02 13:04:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17386510] [2023-12-02 13:04:05,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 13:04:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 13:04:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1340, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 13:04:05,077 INFO L87 Difference]: Start difference. First operand 359 states and 453 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-02 13:04:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:05,621 INFO L93 Difference]: Finished difference Result 590 states and 739 transitions. [2023-12-02 13:04:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 13:04:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 88 [2023-12-02 13:04:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:05,623 INFO L225 Difference]: With dead ends: 590 [2023-12-02 13:04:05,623 INFO L226 Difference]: Without dead ends: 466 [2023-12-02 13:04:05,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 218 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=657, Invalid=2765, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 13:04:05,625 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 142 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:05,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 421 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:04:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-02 13:04:05,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 443. [2023-12-02 13:04:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 362 states have (on average 1.2513812154696133) internal successors, (453), 378 states have internal predecessors, (453), 52 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 13:04:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 557 transitions. [2023-12-02 13:04:05,689 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 557 transitions. Word has length 88 [2023-12-02 13:04:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:05,689 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 557 transitions. [2023-12-02 13:04:05,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-02 13:04:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 557 transitions. [2023-12-02 13:04:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 13:04:05,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:05,691 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:04:05,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 13:04:05,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:05,891 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:04:05,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1087709872, now seen corresponding path program 2 times [2023-12-02 13:04:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:05,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475782585] [2023-12-02 13:04:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:05,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:05,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078763637] [2023-12-02 13:04:05,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:04:05,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:05,900 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:05,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 13:04:05,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:04:05,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:04:05,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:04:05,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 13:04:07,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:18,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475782585] [2023-12-02 13:04:18,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078763637] [2023-12-02 13:04:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078763637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:04:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1191301007] [2023-12-02 13:04:18,108 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:04:18,108 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:18,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:18,109 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:18,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:21,487 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:04:21,575 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:04:22,560 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:04:22,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:35,972 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25918#(and (<= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775809) 0) (<= ~counter~0 100) (exists ((v_~counter~0_127 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= (+ v_~counter~0_127 1) ~counter~0) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))))' at error location [2023-12-02 13:04:35,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:35,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:04:35,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 13:04:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449944598] [2023-12-02 13:04:35,972 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:04:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:04:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1827, Unknown=1, NotChecked=0, Total=2162 [2023-12-02 13:04:35,974 INFO L87 Difference]: Start difference. First operand 443 states and 557 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 13:04:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:37,763 INFO L93 Difference]: Finished difference Result 559 states and 704 transitions. [2023-12-02 13:04:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:04:37,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-12-02 13:04:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:37,766 INFO L225 Difference]: With dead ends: 559 [2023-12-02 13:04:37,766 INFO L226 Difference]: Without dead ends: 557 [2023-12-02 13:04:37,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 177 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=364, Invalid=1987, Unknown=1, NotChecked=0, Total=2352 [2023-12-02 13:04:37,767 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 141 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:37,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 168 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 13:04:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-02 13:04:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 457. [2023-12-02 13:04:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 376 states have (on average 1.2367021276595744) internal successors, (465), 392 states have internal predecessors, (465), 52 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 13:04:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 569 transitions. [2023-12-02 13:04:37,820 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 569 transitions. Word has length 88 [2023-12-02 13:04:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:37,820 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 569 transitions. [2023-12-02 13:04:37,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 13:04:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 569 transitions. [2023-12-02 13:04:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 13:04:37,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:37,821 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:04:37,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 13:04:38,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 13:04:38,024 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:04:38,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash -640732243, now seen corresponding path program 2 times [2023-12-02 13:04:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:38,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562129962] [2023-12-02 13:04:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:38,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:38,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839507264] [2023-12-02 13:04:38,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:04:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:38,032 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:38,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 13:04:38,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:04:38,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:04:38,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 13:04:38,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-02 13:04:54,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:59,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562129962] [2023-12-02 13:04:59,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839507264] [2023-12-02 13:04:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839507264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:04:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1857535550] [2023-12-02 13:04:59,038 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:04:59,038 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:59,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:59,039 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:59,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:00,404 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:05:00,492 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:05:01,437 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:05:01,444 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:33,778 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27497#(and (<= ~counter~0 100) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (exists ((v_~counter~0_137 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (= ~counter~0 (+ v_~counter~0_137 1)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))))' at error location [2023-12-02 13:05:33,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:05:33,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:05:33,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 13:05:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103827050] [2023-12-02 13:05:33,778 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:33,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:05:33,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:33,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:05:33,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2004, Unknown=4, NotChecked=0, Total=2352 [2023-12-02 13:05:33,781 INFO L87 Difference]: Start difference. First operand 457 states and 569 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:05:36,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:05:38,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:05:40,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:05:42,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:05:44,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:05:51,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:05:53,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:06:01,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:06:04,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:06:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:05,551 INFO L93 Difference]: Finished difference Result 602 states and 738 transitions. [2023-12-02 13:06:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 13:06:05,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2023-12-02 13:06:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:05,555 INFO L225 Difference]: With dead ends: 602 [2023-12-02 13:06:05,555 INFO L226 Difference]: Without dead ends: 600 [2023-12-02 13:06:05,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=414, Invalid=2443, Unknown=5, NotChecked=0, Total=2862 [2023-12-02 13:06:05,556 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 153 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 23 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:05,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 221 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 429 Invalid, 9 Unknown, 0 Unchecked, 24.7s Time] [2023-12-02 13:06:05,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-12-02 13:06:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 520. [2023-12-02 13:06:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 434 states have (on average 1.237327188940092) internal successors, (537), 449 states have internal predecessors, (537), 58 states have call successors, (58), 12 states have call predecessors, (58), 12 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 13:06:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 653 transitions. [2023-12-02 13:06:05,620 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 653 transitions. Word has length 89 [2023-12-02 13:06:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:05,620 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 653 transitions. [2023-12-02 13:06:05,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:06:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 653 transitions. [2023-12-02 13:06:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 13:06:05,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:05,622 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:05,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 13:06:05,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:05,822 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:06:05,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1203010171, now seen corresponding path program 1 times [2023-12-02 13:06:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:05,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887457397] [2023-12-02 13:06:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:05,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:05,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737414732] [2023-12-02 13:06:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:05,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:05,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:05,832 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:05,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 13:06:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:05,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:06:05,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 13:06:06,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:06,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887457397] [2023-12-02 13:06:06,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737414732] [2023-12-02 13:06:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737414732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1656745812] [2023-12-02 13:06:06,771 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:06:06,771 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:06,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:06,772 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:06,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:08,169 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:06:08,257 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:06:09,231 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:06:09,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:42,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29243#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) 0) (exists ((v_~counter~0_147 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_147 1)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= 2 v_~counter~0_147) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (<= ~counter~0 100))' at error location [2023-12-02 13:06:42,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:06:42,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:06:42,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:06:42,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31978471] [2023-12-02 13:06:42,669 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:42,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:06:42,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:42,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:06:42,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1319, Unknown=6, NotChecked=0, Total=1560 [2023-12-02 13:06:42,670 INFO L87 Difference]: Start difference. First operand 520 states and 653 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 13:06:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:43,009 INFO L93 Difference]: Finished difference Result 738 states and 907 transitions. [2023-12-02 13:06:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:06:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 95 [2023-12-02 13:06:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:43,013 INFO L225 Difference]: With dead ends: 738 [2023-12-02 13:06:43,013 INFO L226 Difference]: Without dead ends: 618 [2023-12-02 13:06:43,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 168 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=235, Invalid=1319, Unknown=6, NotChecked=0, Total=1560 [2023-12-02 13:06:43,015 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 84 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:43,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 230 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:06:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-02 13:06:43,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 603. [2023-12-02 13:06:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 511 states have (on average 1.2211350293542074) internal successors, (624), 526 states have internal predecessors, (624), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-02 13:06:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 752 transitions. [2023-12-02 13:06:43,084 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 752 transitions. Word has length 95 [2023-12-02 13:06:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 752 transitions. [2023-12-02 13:06:43,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 13:06:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 752 transitions. [2023-12-02 13:06:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 13:06:43,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:43,086 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:43,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 13:06:43,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:43,287 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:06:43,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash -437106496, now seen corresponding path program 1 times [2023-12-02 13:06:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581015948] [2023-12-02 13:06:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:43,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736161809] [2023-12-02 13:06:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:43,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:43,299 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:43,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 13:06:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:43,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:06:43,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:06:43,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:06:44,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581015948] [2023-12-02 13:06:44,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736161809] [2023-12-02 13:06:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736161809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795547124] [2023-12-02 13:06:44,017 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 13:06:44,017 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:44,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:44,017 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:44,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:45,870 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:06:45,877 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:07:15,874 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31489#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 100) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 13:07:15,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:07:15,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:07:15,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 13:07:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015163651] [2023-12-02 13:07:15,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:07:15,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:07:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:07:15,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1191, Unknown=5, NotChecked=0, Total=1482 [2023-12-02 13:07:15,877 INFO L87 Difference]: Start difference. First operand 603 states and 752 transitions. Second operand has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 12 states have internal predecessors, (129), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 13:07:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:16,322 INFO L93 Difference]: Finished difference Result 751 states and 948 transitions. [2023-12-02 13:07:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:07:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 12 states have internal predecessors, (129), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 103 [2023-12-02 13:07:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:16,326 INFO L225 Difference]: With dead ends: 751 [2023-12-02 13:07:16,326 INFO L226 Difference]: Without dead ends: 749 [2023-12-02 13:07:16,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 257 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=355, Invalid=1446, Unknown=5, NotChecked=0, Total=1806 [2023-12-02 13:07:16,328 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 188 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:16,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 264 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:07:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-02 13:07:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 640. [2023-12-02 13:07:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 542 states have (on average 1.2380073800738007) internal successors, (671), 557 states have internal predecessors, (671), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 13:07:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 811 transitions. [2023-12-02 13:07:16,406 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 811 transitions. Word has length 103 [2023-12-02 13:07:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:16,406 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 811 transitions. [2023-12-02 13:07:16,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 12 states have internal predecessors, (129), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 13:07:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 811 transitions. [2023-12-02 13:07:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 13:07:16,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:16,407 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 13:07:16,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 13:07:16,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:16,608 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:07:16,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -790239549, now seen corresponding path program 1 times [2023-12-02 13:07:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485516905] [2023-12-02 13:07:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:16,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:16,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046892422] [2023-12-02 13:07:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:16,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:16,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:16,617 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:16,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 13:07:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:16,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:07:16,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:07:16,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:07:20,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485516905] [2023-12-02 13:07:20,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046892422] [2023-12-02 13:07:20,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046892422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:07:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [66328866] [2023-12-02 13:07:20,130 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:07:20,130 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:07:20,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:07:20,130 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:07:20,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:07:21,555 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:07:21,655 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:07:22,592 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:07:22,598 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:07:32,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33822#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= (+ 9223372036854775809 |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= ~counter~0 100) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 13:07:32,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:07:32,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:07:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2023-12-02 13:07:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477608969] [2023-12-02 13:07:32,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:07:32,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:07:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:07:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 13:07:32,856 INFO L87 Difference]: Start difference. First operand 640 states and 811 transitions. Second operand has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 13:07:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:33,180 INFO L93 Difference]: Finished difference Result 870 states and 1117 transitions. [2023-12-02 13:07:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:07:33,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 108 [2023-12-02 13:07:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:33,184 INFO L225 Difference]: With dead ends: 870 [2023-12-02 13:07:33,184 INFO L226 Difference]: Without dead ends: 858 [2023-12-02 13:07:33,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 271 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=325, Invalid=2027, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 13:07:33,185 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 242 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:33,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 248 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:07:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-02 13:07:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 631. [2023-12-02 13:07:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 537 states have (on average 1.1843575418994414) internal successors, (636), 548 states have internal predecessors, (636), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 13:07:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 776 transitions. [2023-12-02 13:07:33,275 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 776 transitions. Word has length 108 [2023-12-02 13:07:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:33,276 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 776 transitions. [2023-12-02 13:07:33,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 13:07:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 776 transitions. [2023-12-02 13:07:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 13:07:33,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:33,277 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 13:07:33,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 13:07:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:33,477 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:07:33,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1272377884, now seen corresponding path program 1 times [2023-12-02 13:07:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475484303] [2023-12-02 13:07:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:33,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685447374] [2023-12-02 13:07:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:33,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:33,485 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:33,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 13:07:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:33,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:07:33,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:07:33,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:07:35,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:35,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475484303] [2023-12-02 13:07:35,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685447374] [2023-12-02 13:07:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685447374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:07:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137833520] [2023-12-02 13:07:35,476 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:07:35,476 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:07:35,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:07:35,476 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:07:35,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:07:36,889 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:07:36,977 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:07:37,923 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:07:37,929 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:08:12,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36293#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= ~counter~0 100) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 13:08:12,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:08:12,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:08:12,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 13:08:12,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020559796] [2023-12-02 13:08:12,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:08:12,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:08:12,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:08:12,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1792, Unknown=6, NotChecked=0, Total=2070 [2023-12-02 13:08:12,457 INFO L87 Difference]: Start difference. First operand 631 states and 776 transitions. Second operand has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 13:08:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:13,969 INFO L93 Difference]: Finished difference Result 857 states and 1022 transitions. [2023-12-02 13:08:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 13:08:13,969 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 109 [2023-12-02 13:08:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:13,973 INFO L225 Difference]: With dead ends: 857 [2023-12-02 13:08:13,973 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 13:08:13,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=407, Invalid=2557, Unknown=6, NotChecked=0, Total=2970 [2023-12-02 13:08:13,974 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 450 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:13,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 460 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 13:08:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 13:08:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 699. [2023-12-02 13:08:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 599 states have (on average 1.1769616026711185) internal successors, (705), 610 states have internal predecessors, (705), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-02 13:08:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 857 transitions. [2023-12-02 13:08:14,060 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 857 transitions. Word has length 109 [2023-12-02 13:08:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:14,061 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 857 transitions. [2023-12-02 13:08:14,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 13:08:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 857 transitions. [2023-12-02 13:08:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 13:08:14,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:14,061 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:14,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 13:08:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 13:08:14,262 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:14,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash -721507840, now seen corresponding path program 1 times [2023-12-02 13:08:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:14,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986816243] [2023-12-02 13:08:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:14,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102846289] [2023-12-02 13:08:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:14,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:14,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:14,274 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:14,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 13:08:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:14,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:08:14,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:08:14,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:08:14,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:14,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986816243] [2023-12-02 13:08:14,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:14,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102846289] [2023-12-02 13:08:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102846289] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:14,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1903764975] [2023-12-02 13:08:14,663 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 13:08:14,663 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:14,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:14,664 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:14,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:17,173 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:08:17,180 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:08:48,729 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38853#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0) (exists ((v_~counter~0_205 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 101) (= v_~counter~0_205 100) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))))' at error location [2023-12-02 13:08:48,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:08:48,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:08:48,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-02 13:08:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184899550] [2023-12-02 13:08:48,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:08:48,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 13:08:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 13:08:48,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3069, Unknown=3, NotChecked=0, Total=3422 [2023-12-02 13:08:48,731 INFO L87 Difference]: Start difference. First operand 699 states and 857 transitions. Second operand has 26 states, 26 states have (on average 5.653846153846154) internal successors, (147), 26 states have internal predecessors, (147), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-02 13:08:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:50,024 INFO L93 Difference]: Finished difference Result 799 states and 959 transitions. [2023-12-02 13:08:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 13:08:50,025 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.653846153846154) internal successors, (147), 26 states have internal predecessors, (147), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 110 [2023-12-02 13:08:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:50,028 INFO L225 Difference]: With dead ends: 799 [2023-12-02 13:08:50,028 INFO L226 Difference]: Without dead ends: 787 [2023-12-02 13:08:50,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 263 SyntacticMatches, 8 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2888 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=789, Invalid=6180, Unknown=3, NotChecked=0, Total=6972 [2023-12-02 13:08:50,030 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 135 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:50,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 788 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:08:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-02 13:08:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 771. [2023-12-02 13:08:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 663 states have (on average 1.1568627450980393) internal successors, (767), 674 states have internal predecessors, (767), 80 states have call successors, (80), 16 states have call predecessors, (80), 16 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 13:08:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 927 transitions. [2023-12-02 13:08:50,125 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 927 transitions. Word has length 110 [2023-12-02 13:08:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:50,126 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 927 transitions. [2023-12-02 13:08:50,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.653846153846154) internal successors, (147), 26 states have internal predecessors, (147), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-02 13:08:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 927 transitions. [2023-12-02 13:08:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 13:08:50,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:50,127 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:50,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 13:08:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 13:08:50,327 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:50,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1871883693, now seen corresponding path program 1 times [2023-12-02 13:08:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260827064] [2023-12-02 13:08:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:50,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:50,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227366308] [2023-12-02 13:08:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:50,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:50,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:50,336 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:50,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 13:08:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:50,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:08:50,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-02 13:08:50,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:50,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260827064] [2023-12-02 13:08:50,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227366308] [2023-12-02 13:08:50,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227366308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:50,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:08:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629513625] [2023-12-02 13:08:50,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:50,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:08:50,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:08:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:08:50,635 INFO L87 Difference]: Start difference. First operand 771 states and 927 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:08:50,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:50,890 INFO L93 Difference]: Finished difference Result 1054 states and 1278 transitions. [2023-12-02 13:08:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:08:50,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 113 [2023-12-02 13:08:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:50,894 INFO L225 Difference]: With dead ends: 1054 [2023-12-02 13:08:50,894 INFO L226 Difference]: Without dead ends: 726 [2023-12-02 13:08:50,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:08:50,895 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 107 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:50,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 257 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-02 13:08:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 631. [2023-12-02 13:08:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 533 states have (on average 1.174484052532833) internal successors, (626), 544 states have internal predecessors, (626), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 13:08:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 766 transitions. [2023-12-02 13:08:50,978 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 766 transitions. Word has length 113 [2023-12-02 13:08:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 766 transitions. [2023-12-02 13:08:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:08:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 766 transitions. [2023-12-02 13:08:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 13:08:50,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:50,980 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 13:08:50,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 13:08:51,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-02 13:08:51,181 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:51,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:51,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1917407547, now seen corresponding path program 3 times [2023-12-02 13:08:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:51,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690392609] [2023-12-02 13:08:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:51,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406859636] [2023-12-02 13:08:51,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:08:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:51,189 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:51,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 13:08:51,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:08:51,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:08:51,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:08:51,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:08:51,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:52,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690392609] [2023-12-02 13:08:52,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406859636] [2023-12-02 13:08:52,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406859636] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:08:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1418942443] [2023-12-02 13:08:52,167 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:08:52,168 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:52,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:52,168 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:52,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:53,547 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:08:53,634 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:08:54,570 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:08:54,576 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:32,301 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43536#(and (<= ~counter~0 100) (exists ((v_~counter~0_215 Int)) (and (= ~counter~0 (+ v_~counter~0_215 1)) (<= 2 v_~counter~0_215) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 13:09:32,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:09:32,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:09:32,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 13:09:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487801236] [2023-12-02 13:09:32,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:09:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:09:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1528, Unknown=7, NotChecked=0, Total=1806 [2023-12-02 13:09:32,302 INFO L87 Difference]: Start difference. First operand 631 states and 766 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:09:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:32,622 INFO L93 Difference]: Finished difference Result 635 states and 766 transitions. [2023-12-02 13:09:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:09:32,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2023-12-02 13:09:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:32,625 INFO L225 Difference]: With dead ends: 635 [2023-12-02 13:09:32,625 INFO L226 Difference]: Without dead ends: 634 [2023-12-02 13:09:32,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 197 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=271, Invalid=1528, Unknown=7, NotChecked=0, Total=1806 [2023-12-02 13:09:32,626 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:32,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 314 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:09:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-02 13:09:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2023-12-02 13:09:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 533 states have (on average 1.172607879924953) internal successors, (625), 544 states have internal predecessors, (625), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 13:09:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 765 transitions. [2023-12-02 13:09:32,710 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 765 transitions. Word has length 115 [2023-12-02 13:09:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:32,710 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 765 transitions. [2023-12-02 13:09:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:09:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 765 transitions. [2023-12-02 13:09:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 13:09:32,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:32,712 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 13:09:32,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 13:09:32,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 13:09:32,912 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:09:32,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:32,912 INFO L85 PathProgramCache]: Analyzing trace with hash -87679641, now seen corresponding path program 2 times [2023-12-02 13:09:32,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:32,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550602828] [2023-12-02 13:09:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:32,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:32,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:09:32,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443494546] [2023-12-02 13:09:32,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:09:32,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:32,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:32,921 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:32,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 13:09:33,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 13:09:33,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:09:33,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 13:09:33,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 13:09:33,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:35,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:35,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550602828] [2023-12-02 13:09:35,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:09:35,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443494546] [2023-12-02 13:09:35,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443494546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:35,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276466612] [2023-12-02 13:09:35,373 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:09:35,373 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:09:35,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:09:35,373 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:09:35,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:09:36,758 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:09:36,847 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:09:37,815 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:09:37,821 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:51,464 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45504#(and (exists ((v_~counter~0_225 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_225 1)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= ~counter~0 100) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 13:09:51,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:09:51,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:09:51,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 13:09:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733396785] [2023-12-02 13:09:51,465 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:51,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:09:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:09:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2255, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 13:09:51,466 INFO L87 Difference]: Start difference. First operand 631 states and 765 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 14 states have internal predecessors, (79), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:09:52,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:52,249 INFO L93 Difference]: Finished difference Result 632 states and 765 transitions. [2023-12-02 13:09:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:09:52,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 14 states have internal predecessors, (79), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2023-12-02 13:09:52,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:52,253 INFO L225 Difference]: With dead ends: 632 [2023-12-02 13:09:52,253 INFO L226 Difference]: Without dead ends: 575 [2023-12-02 13:09:52,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 195 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=305, Invalid=2347, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 13:09:52,254 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:52,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 456 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:09:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2023-12-02 13:09:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2023-12-02 13:09:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 483 states have (on average 1.1884057971014492) internal successors, (574), 494 states have internal predecessors, (574), 66 states have call successors, (66), 14 states have call predecessors, (66), 14 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-02 13:09:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 706 transitions. [2023-12-02 13:09:52,352 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 706 transitions. Word has length 117 [2023-12-02 13:09:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:52,352 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 706 transitions. [2023-12-02 13:09:52,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 14 states have internal predecessors, (79), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:09:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 706 transitions. [2023-12-02 13:09:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 13:09:52,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:52,353 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:52,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 13:09:52,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 13:09:52,554 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:09:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -371912117, now seen corresponding path program 3 times [2023-12-02 13:09:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204504947] [2023-12-02 13:09:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:52,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:09:52,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207144057] [2023-12-02 13:09:52,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:09:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:52,566 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:52,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 13:09:52,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:09:52,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:09:52,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 13:09:52,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-02 13:09:53,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-02 13:10:02,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204504947] [2023-12-02 13:10:02,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:10:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207144057] [2023-12-02 13:10:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207144057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:10:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118342878] [2023-12-02 13:10:02,073 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:10:02,073 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:10:02,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:10:02,073 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:10:02,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:10:04,120 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:10:04,207 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:10:05,171 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:10:05,178 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:10:22,107 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '47792#(and (<= (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= ~counter~0 100) (exists ((v_~counter~0_241 Int)) (and (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (= ~counter~0 (+ v_~counter~0_241 1)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 13:10:22,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:10:22,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:10:22,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-02 13:10:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731783041] [2023-12-02 13:10:22,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:10:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 13:10:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 13:10:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=3382, Unknown=1, NotChecked=0, Total=3782 [2023-12-02 13:10:22,109 INFO L87 Difference]: Start difference. First operand 575 states and 706 transitions. Second operand has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 12 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2023-12-02 13:10:30,844 WARN L293 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 89 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:11:11,174 WARN L293 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 66 DAG size of output: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:11:28,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:42,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:11:42,382 INFO L93 Difference]: Finished difference Result 763 states and 912 transitions. [2023-12-02 13:11:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 13:11:42,382 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 12 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) Word has length 131 [2023-12-02 13:11:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:11:42,385 INFO L225 Difference]: With dead ends: 763 [2023-12-02 13:11:42,385 INFO L226 Difference]: Without dead ends: 762 [2023-12-02 13:11:42,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 323 SyntacticMatches, 8 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3162 ImplicationChecksByTransitivity, 71.2s TimeCoverageRelationStatistics Valid=1285, Invalid=9218, Unknown=3, NotChecked=0, Total=10506 [2023-12-02 13:11:42,387 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 1091 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:11:42,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1023 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2023-12-02 13:11:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-02 13:11:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 679. [2023-12-02 13:11:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 579 states have (on average 1.1727115716753023) internal successors, (679), 590 states have internal predecessors, (679), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-02 13:11:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 827 transitions. [2023-12-02 13:11:42,495 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 827 transitions. Word has length 131 [2023-12-02 13:11:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:42,495 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 827 transitions. [2023-12-02 13:11:42,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 12 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2023-12-02 13:11:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 827 transitions. [2023-12-02 13:11:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-02 13:11:42,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:42,496 INFO L195 NwaCegarLoop]: trace histogram [18, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:42,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 13:11:42,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:42,696 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:11:42,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash 871999695, now seen corresponding path program 1 times [2023-12-02 13:11:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059590017] [2023-12-02 13:11:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:42,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:11:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791142693] [2023-12-02 13:11:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:42,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:42,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:42,706 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:11:42,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 13:11:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:42,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:11:42,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-02 13:11:43,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:11:43,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:43,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059590017] [2023-12-02 13:11:43,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:11:43,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791142693] [2023-12-02 13:11:43,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791142693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:11:43,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [686248219] [2023-12-02 13:11:43,417 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:11:43,417 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:11:43,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:11:43,418 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:11:43,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:11:46,825 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:11:46,913 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:11:47,891 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:11:47,898 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:12:28,089 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50102#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= ~counter~0 100) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))' at error location [2023-12-02 13:12:28,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:12:28,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:12:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 13:12:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829621559] [2023-12-02 13:12:28,090 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:12:28,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:12:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:12:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:12:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1462, Unknown=6, NotChecked=0, Total=1722 [2023-12-02 13:12:28,091 INFO L87 Difference]: Start difference. First operand 679 states and 827 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 13:12:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:28,638 INFO L93 Difference]: Finished difference Result 990 states and 1215 transitions. [2023-12-02 13:12:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:12:28,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 136 [2023-12-02 13:12:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:28,642 INFO L225 Difference]: With dead ends: 990 [2023-12-02 13:12:28,642 INFO L226 Difference]: Without dead ends: 798 [2023-12-02 13:12:28,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 247 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=254, Invalid=1462, Unknown=6, NotChecked=0, Total=1722 [2023-12-02 13:12:28,644 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 130 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:28,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 657 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:12:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-02 13:12:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 729. [2023-12-02 13:12:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 625 states have (on average 1.1664) internal successors, (729), 636 states have internal predecessors, (729), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-02 13:12:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 885 transitions. [2023-12-02 13:12:28,753 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 885 transitions. Word has length 136 [2023-12-02 13:12:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:28,754 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 885 transitions. [2023-12-02 13:12:28,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 13:12:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 885 transitions. [2023-12-02 13:12:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 13:12:28,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:28,755 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 13:12:28,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 13:12:28,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:28,955 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:12:28,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1338724541, now seen corresponding path program 4 times [2023-12-02 13:12:28,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:12:28,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554741643] [2023-12-02 13:12:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:28,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:12:28,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:12:28,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638382392] [2023-12-02 13:12:28,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:12:28,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:12:28,964 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:12:28,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 13:12:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:29,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:12:29,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-02 13:12:29,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:29,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:12:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554741643] [2023-12-02 13:12:29,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:12:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638382392] [2023-12-02 13:12:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638382392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:12:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596836037] [2023-12-02 13:12:29,892 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:12:29,892 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:12:29,892 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:12:29,892 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:12:29,892 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:12:31,305 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:12:31,404 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:12:32,435 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:12:32,442 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:13:13,317 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '52626#(and (exists ((v_~counter~0_261 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_261 1)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= ~counter~0 100) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 13:13:13,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:13:13,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:13:13,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 13:13:13,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053917659] [2023-12-02 13:13:13,318 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:13:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:13:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:13:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:13:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1607, Unknown=6, NotChecked=0, Total=1892 [2023-12-02 13:13:13,319 INFO L87 Difference]: Start difference. First operand 729 states and 885 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 13:13:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:13,742 INFO L93 Difference]: Finished difference Result 792 states and 950 transitions. [2023-12-02 13:13:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:13:13,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 135 [2023-12-02 13:13:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:13,745 INFO L225 Difference]: With dead ends: 792 [2023-12-02 13:13:13,745 INFO L226 Difference]: Without dead ends: 788 [2023-12-02 13:13:13,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 235 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=279, Invalid=1607, Unknown=6, NotChecked=0, Total=1892 [2023-12-02 13:13:13,746 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 69 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:13,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 411 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:13:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-02 13:13:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 753. [2023-12-02 13:13:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 647 states have (on average 1.1653786707882534) internal successors, (754), 658 states have internal predecessors, (754), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 13:13:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 914 transitions. [2023-12-02 13:13:13,864 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 914 transitions. Word has length 135 [2023-12-02 13:13:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:13,864 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 914 transitions. [2023-12-02 13:13:13,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 13:13:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 914 transitions. [2023-12-02 13:13:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 13:13:13,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:13,866 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 13:13:13,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 13:13:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:14,067 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:13:14,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1975907941, now seen corresponding path program 4 times [2023-12-02 13:13:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:13:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073844331] [2023-12-02 13:13:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:13:14,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:13:14,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476189205] [2023-12-02 13:13:14,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:13:14,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:14,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:14,076 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:13:14,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 13:13:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:14,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 13:13:14,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-02 13:13:15,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:13:16,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:13:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073844331] [2023-12-02 13:13:16,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:13:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476189205] [2023-12-02 13:13:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476189205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:13:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2059318968] [2023-12-02 13:13:16,411 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:13:16,411 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:13:16,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:13:16,411 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:13:16,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:13:17,899 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:13:17,987 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:13:19,046 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:13:19,053 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:13:40,837 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '54967#(and (exists ((v_~counter~0_271 Int)) (and (<= 2 v_~counter~0_271) (= ~counter~0 (+ v_~counter~0_271 1)) (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (<= (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= ~counter~0 100) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 13:13:40,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:13:40,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:13:40,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 13:13:40,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835772241] [2023-12-02 13:13:40,837 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:13:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:13:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:13:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:13:40,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2447, Unknown=1, NotChecked=0, Total=2756 [2023-12-02 13:13:40,839 INFO L87 Difference]: Start difference. First operand 753 states and 914 transitions. Second operand has 16 states, 15 states have (on average 6.0) internal successors, (90), 16 states have internal predecessors, (90), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 13:13:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:42,528 INFO L93 Difference]: Finished difference Result 769 states and 928 transitions. [2023-12-02 13:13:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 13:13:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.0) internal successors, (90), 16 states have internal predecessors, (90), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 137 [2023-12-02 13:13:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:42,531 INFO L225 Difference]: With dead ends: 769 [2023-12-02 13:13:42,531 INFO L226 Difference]: Without dead ends: 768 [2023-12-02 13:13:42,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 232 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=308, Invalid=2447, Unknown=1, NotChecked=0, Total=2756 [2023-12-02 13:13:42,532 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 35 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:42,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 800 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 13:13:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2023-12-02 13:13:42,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 753. [2023-12-02 13:13:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 647 states have (on average 1.1638330757341577) internal successors, (753), 658 states have internal predecessors, (753), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 13:13:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 913 transitions. [2023-12-02 13:13:42,645 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 913 transitions. Word has length 137 [2023-12-02 13:13:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:42,645 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 913 transitions. [2023-12-02 13:13:42,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.0) internal successors, (90), 16 states have internal predecessors, (90), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 13:13:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 913 transitions. [2023-12-02 13:13:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 13:13:42,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:42,647 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:42,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-02 13:13:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:42,848 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:13:42,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1846036444, now seen corresponding path program 2 times [2023-12-02 13:13:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:13:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050001458] [2023-12-02 13:13:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:13:42,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:13:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738251111] [2023-12-02 13:13:42,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:13:42,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:42,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:42,859 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:13:42,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-02 13:13:46,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-02 13:13:46,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:13:46,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:13:46,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 13:13:46,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:13:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-02 13:13:46,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:13:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050001458] [2023-12-02 13:13:46,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:13:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738251111] [2023-12-02 13:13:46,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738251111] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:13:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [822817999] [2023-12-02 13:13:46,882 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 13:13:46,882 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:13:46,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:13:46,883 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:13:46,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:13:49,593 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:13:49,600 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:14:34,372 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '57738#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0) (exists ((v_~counter~0_290 Int)) (and (<= 1 |#StackHeapBarrier|) (= v_~counter~0_290 100) (= ~counter~0 101) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))))' at error location [2023-12-02 13:14:34,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:14:34,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:14:34,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-12-02 13:14:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921366494] [2023-12-02 13:14:34,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:14:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 13:14:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:14:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 13:14:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=3969, Unknown=7, NotChecked=0, Total=4422 [2023-12-02 13:14:34,374 INFO L87 Difference]: Start difference. First operand 753 states and 913 transitions. Second operand has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 14 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) [2023-12-02 13:14:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:36,053 INFO L93 Difference]: Finished difference Result 901 states and 1074 transitions. [2023-12-02 13:14:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 13:14:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 14 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) Word has length 152 [2023-12-02 13:14:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:36,057 INFO L225 Difference]: With dead ends: 901 [2023-12-02 13:14:36,057 INFO L226 Difference]: Without dead ends: 889 [2023-12-02 13:14:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 378 SyntacticMatches, 11 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4299 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=1220, Invalid=8873, Unknown=7, NotChecked=0, Total=10100 [2023-12-02 13:14:36,060 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 261 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 661 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:14:36,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-12-02 13:14:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 861. [2023-12-02 13:14:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 742 states have (on average 1.1549865229110512) internal successors, (857), 753 states have internal predecessors, (857), 88 states have call successors, (88), 19 states have call predecessors, (88), 19 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 13:14:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1033 transitions. [2023-12-02 13:14:36,218 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1033 transitions. Word has length 152 [2023-12-02 13:14:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:36,219 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1033 transitions. [2023-12-02 13:14:36,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 14 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) [2023-12-02 13:14:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1033 transitions. [2023-12-02 13:14:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 13:14:36,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:36,220 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2023-12-02 13:14:36,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-02 13:14:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:36,421 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:14:36,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1563638544, now seen corresponding path program 1 times [2023-12-02 13:14:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:14:36,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433718921] [2023-12-02 13:14:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:14:36,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:14:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804439847] [2023-12-02 13:14:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:36,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:14:36,434 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:14:36,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-02 13:14:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:36,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:14:36,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 72 proven. 62 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-02 13:14:36,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 38 proven. 96 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-02 13:14:42,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:14:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433718921] [2023-12-02 13:14:42,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:14:42,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804439847] [2023-12-02 13:14:42,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804439847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:14:42,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1346143847] [2023-12-02 13:14:42,167 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:14:42,167 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:14:42,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:14:42,167 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:14:42,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:14:43,717 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:14:43,807 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 13:14:44,749 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:14:44,755 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:14:56,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60853#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 100) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 13:14:56,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:14:56,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:14:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-02 13:14:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365358235] [2023-12-02 13:14:56,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:14:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 13:14:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:14:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 13:14:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 13:14:56,405 INFO L87 Difference]: Start difference. First operand 861 states and 1033 transitions. Second operand has 22 states, 21 states have (on average 9.476190476190476) internal successors, (199), 22 states have internal predecessors, (199), 14 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) [2023-12-02 13:14:58,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:15:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:15:01,662 INFO L93 Difference]: Finished difference Result 1489 states and 1782 transitions. [2023-12-02 13:15:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 13:15:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 9.476190476190476) internal successors, (199), 22 states have internal predecessors, (199), 14 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) Word has length 153 [2023-12-02 13:15:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:15:01,671 INFO L225 Difference]: With dead ends: 1489 [2023-12-02 13:15:01,671 INFO L226 Difference]: Without dead ends: 1487 [2023-12-02 13:15:01,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 395 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=748, Invalid=3542, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 13:15:01,672 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 957 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:15:01,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 732 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 13:15:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2023-12-02 13:15:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1045. [2023-12-02 13:15:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 910 states have (on average 1.1978021978021978) internal successors, (1090), 921 states have internal predecessors, (1090), 104 states have call successors, (104), 19 states have call predecessors, (104), 19 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-02 13:15:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1298 transitions. [2023-12-02 13:15:01,847 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1298 transitions. Word has length 153 [2023-12-02 13:15:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:15:01,847 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1298 transitions. [2023-12-02 13:15:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 9.476190476190476) internal successors, (199), 22 states have internal predecessors, (199), 14 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) [2023-12-02 13:15:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1298 transitions. [2023-12-02 13:15:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-02 13:15:01,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:15:01,849 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:15:01,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-02 13:15:02,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-02 13:15:02,049 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:15:02,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:15:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1645052689, now seen corresponding path program 2 times [2023-12-02 13:15:02,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:15:02,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115224342] [2023-12-02 13:15:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:15:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:15:02,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:15:02,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640664239] [2023-12-02 13:15:02,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:15:02,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:15:02,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:15:02,061 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:15:02,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a890a86-a992-42ea-9417-a999c96ebf9c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-02 13:15:02,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:15:02,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:15:02,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 13:15:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:15:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 34 proven. 15 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-12-02 13:15:02,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:15:07,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:15:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115224342] [2023-12-02 13:15:07,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:15:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640664239] [2023-12-02 13:15:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640664239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:15:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1843449298] [2023-12-02 13:15:07,064 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 13:15:07,064 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:15:07,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:15:07,064 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:15:07,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs