./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/ps4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/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_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/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_a1696e09-4b83-42f0-8e68-0737d664f795/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 197bb91209feafbd50d8f722faabb2ddec80478a21cb1768541ed232586540b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:31:37,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:31:37,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:31:37,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:31:37,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:31:37,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:31:37,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:31:37,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:31:37,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:31:37,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:31:37,902 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:31:37,903 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:31:37,903 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:31:37,904 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:31:37,904 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:31:37,905 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:31:37,905 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:31:37,906 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:31:37,906 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:31:37,907 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:31:37,908 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:31:37,908 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:31:37,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:31:37,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:31:37,910 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:31:37,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:31:37,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:31:37,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:31:37,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:31:37,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:31:37,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:31:37,913 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:31:37,913 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:31:37,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:31:37,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:31:37,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:31:37,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:31:37,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:31:37,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:31:37,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:31:37,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:31:37,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:31:37,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:31:37,915 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:31:37,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:31:37,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:31:37,916 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:31:37,916 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:31:37,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:31:37,916 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_a1696e09-4b83-42f0-8e68-0737d664f795/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 197bb91209feafbd50d8f722faabb2ddec80478a21cb1768541ed232586540b8 [2023-12-02 15:31:38,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:31:38,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:31:38,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:31:38,140 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:31:38,141 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:31:38,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench/ps4.c [2023-12-02 15:31:40,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:31:41,026 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:31:41,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/sv-benchmarks/c/nla-digbench/ps4.c [2023-12-02 15:31:41,033 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/data/b9e40f018/f06b12fe9553437c880d57e6256db732/FLAG741f846a5 [2023-12-02 15:31:41,045 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/data/b9e40f018/f06b12fe9553437c880d57e6256db732 [2023-12-02 15:31:41,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:31:41,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:31:41,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:31:41,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:31:41,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:31:41,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68608def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41, skipping insertion in model container [2023-12-02 15:31:41,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,075 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:31:41,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:31:41,237 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:31:41,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:31:41,267 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:31:41,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41 WrapperNode [2023-12-02 15:31:41,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:31:41,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:31:41,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:31:41,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:31:41,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,306 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-12-02 15:31:41,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:31:41,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:31:41,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:31:41,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:31:41,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:31:41,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:31:41,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:31:41,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:31:41,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (1/1) ... [2023-12-02 15:31:41,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:31:41,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:41,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:31:41,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:31:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:31:41,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:31:41,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:31:41,462 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:31:41,464 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:31:41,906 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:31:41,938 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:31:41,938 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:31:41,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:41 BoogieIcfgContainer [2023-12-02 15:31:41,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:31:41,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:31:41,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:31:41,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:31:41,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:31:41" (1/3) ... [2023-12-02 15:31:41,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baddc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:41, skipping insertion in model container [2023-12-02 15:31:41,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:41" (2/3) ... [2023-12-02 15:31:41,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baddc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:41, skipping insertion in model container [2023-12-02 15:31:41,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:41" (3/3) ... [2023-12-02 15:31:41,949 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4.c [2023-12-02 15:31:41,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:31:41,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-12-02 15:31:42,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:31:42,009 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;@6d2e650, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:31:42,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-12-02 15:31:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 65 states have (on average 1.9538461538461538) internal successors, (127), 125 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:31:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:31:42,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:42,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:31:42,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:42,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash 195633, now seen corresponding path program 1 times [2023-12-02 15:31:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:42,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889438725] [2023-12-02 15:31:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:42,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889438725] [2023-12-02 15:31:42,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 15:31:42,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974130041] [2023-12-02 15:31:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:42,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:42,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:42,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:42,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:31:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:42,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:31:42,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:42,185 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 15:31:42,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974130041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:42,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:31:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216119996] [2023-12-02 15:31:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:42,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:31:42,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:31:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:31:42,217 INFO L87 Difference]: Start difference. First operand has 130 states, 65 states have (on average 1.9538461538461538) internal successors, (127), 125 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:31:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:42,250 INFO L93 Difference]: Finished difference Result 187 states and 195 transitions. [2023-12-02 15:31:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:31:42,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 15:31:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:42,260 INFO L225 Difference]: With dead ends: 187 [2023-12-02 15:31:42,260 INFO L226 Difference]: Without dead ends: 117 [2023-12-02 15:31:42,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:31:42,266 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:42,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:31:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-02 15:31:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-02 15:31:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 64 states have (on average 1.78125) internal successors, (114), 113 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:31:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2023-12-02 15:31:42,320 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 3 [2023-12-02 15:31:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:42,321 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2023-12-02 15:31:42,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:31:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2023-12-02 15:31:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:31:42,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:42,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:31:42,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:31:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:31:42,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:42,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash 190631, now seen corresponding path program 1 times [2023-12-02 15:31:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:42,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610906810] [2023-12-02 15:31:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:42,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:42,584 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 15:31:42,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610906810] [2023-12-02 15:31:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610906810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:42,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:42,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:31:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515369169] [2023-12-02 15:31:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:42,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:31:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:31:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:31:42,588 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:31:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:42,721 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2023-12-02 15:31:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:31:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 15:31:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:42,724 INFO L225 Difference]: With dead ends: 231 [2023-12-02 15:31:42,724 INFO L226 Difference]: Without dead ends: 220 [2023-12-02 15:31:42,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:31:42,726 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 100 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:42,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 172 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:31:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-02 15:31:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 170. [2023-12-02 15:31:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 115 states have (on average 1.7043478260869565) internal successors, (196), 164 states have internal predecessors, (196), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:31:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 204 transitions. [2023-12-02 15:31:42,743 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 204 transitions. Word has length 3 [2023-12-02 15:31:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:42,743 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 204 transitions. [2023-12-02 15:31:42,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:31:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 204 transitions. [2023-12-02 15:31:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:31:42,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:42,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:31:42,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:31:42,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:42,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:42,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1384165576, now seen corresponding path program 1 times [2023-12-02 15:31:42,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776535758] [2023-12-02 15:31:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:42,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:42,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:42,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722724998] [2023-12-02 15:31:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:42,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:42,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:42,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:31:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:42,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:31:42,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:42,809 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 15:31:42,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:42,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:42,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776535758] [2023-12-02 15:31:42,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:42,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722724998] [2023-12-02 15:31:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722724998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:31:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771262162] [2023-12-02 15:31:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:31:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:31:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:31:42,813 INFO L87 Difference]: Start difference. First operand 170 states and 204 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 15:31:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:43,044 INFO L93 Difference]: Finished difference Result 209 states and 212 transitions. [2023-12-02 15:31:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:31:43,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-02 15:31:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:43,046 INFO L225 Difference]: With dead ends: 209 [2023-12-02 15:31:43,046 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 15:31:43,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 15:31:43,048 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 58 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:43,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 83 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:31:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 15:31:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2023-12-02 15:31:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 119 states have (on average 1.4873949579831933) internal successors, (177), 168 states have internal predecessors, (177), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:31:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2023-12-02 15:31:43,063 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 6 [2023-12-02 15:31:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:43,064 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2023-12-02 15:31:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 15:31:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2023-12-02 15:31:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:31:43,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:43,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:31:43,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:31:43,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:43,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:43,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash -358733777, now seen corresponding path program 1 times [2023-12-02 15:31:43,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048490764] [2023-12-02 15:31:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:43,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:43,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:43,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947086178] [2023-12-02 15:31:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:43,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:43,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:43,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:31:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:43,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:31:43,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:43,357 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 15:31:43,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:43,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:43,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048490764] [2023-12-02 15:31:43,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947086178] [2023-12-02 15:31:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947086178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:31:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772853014] [2023-12-02 15:31:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:43,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:31:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:43,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:31:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:31:43,360 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15:31:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:43,508 INFO L93 Difference]: Finished difference Result 193 states and 196 transitions. [2023-12-02 15:31:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:31:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-12-02 15:31:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:43,512 INFO L225 Difference]: With dead ends: 193 [2023-12-02 15:31:43,512 INFO L226 Difference]: Without dead ends: 191 [2023-12-02 15:31:43,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 15:31:43,514 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 121 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:43,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 139 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:31:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-02 15:31:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174. [2023-12-02 15:31:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 119 states have (on average 1.4705882352941178) internal successors, (175), 168 states have internal predecessors, (175), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:31:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2023-12-02 15:31:43,528 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 11 [2023-12-02 15:31:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:43,528 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2023-12-02 15:31:43,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15:31:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2023-12-02 15:31:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:31:43,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:43,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:31:43,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:31:43,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:43,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:43,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1903007817, now seen corresponding path program 1 times [2023-12-02 15:31:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:43,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994094434] [2023-12-02 15:31:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:43,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:43,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:43,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644056295] [2023-12-02 15:31:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:43,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:43,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:43,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:31:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:43,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:31:43,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:43,868 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 15:31:43,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:43,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:43,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994094434] [2023-12-02 15:31:43,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:43,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644056295] [2023-12-02 15:31:43,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644056295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:43,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:43,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:31:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386251183] [2023-12-02 15:31:43,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:31:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:43,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:31:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:31:43,871 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 15:31:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:44,035 INFO L93 Difference]: Finished difference Result 180 states and 183 transitions. [2023-12-02 15:31:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:31:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2023-12-02 15:31:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:44,037 INFO L225 Difference]: With dead ends: 180 [2023-12-02 15:31:44,037 INFO L226 Difference]: Without dead ends: 148 [2023-12-02 15:31:44,038 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 15:31:44,039 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 39 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:44,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 77 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:31:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-02 15:31:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-12-02 15:31:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.565217391304348) internal successors, (144), 141 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:31:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2023-12-02 15:31:44,056 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 19 [2023-12-02 15:31:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:44,057 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2023-12-02 15:31:44,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 15:31:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2023-12-02 15:31:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:31:44,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:44,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 15:31:44,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:31:44,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:44,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:44,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:44,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1332052536, now seen corresponding path program 1 times [2023-12-02 15:31:44,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:44,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191910559] [2023-12-02 15:31:44,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:44,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:44,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:44,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130963589] [2023-12-02 15:31:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:44,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:44,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:44,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:31:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:44,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:31:44,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:44,371 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 15:31:44,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:44,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191910559] [2023-12-02 15:31:44,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130963589] [2023-12-02 15:31:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130963589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:44,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:44,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:31:44,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823557813] [2023-12-02 15:31:44,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:31:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:31:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:31:44,375 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:44,388 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2023-12-02 15:31:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:31:44,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-12-02 15:31:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:44,390 INFO L225 Difference]: With dead ends: 146 [2023-12-02 15:31:44,390 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 15:31:44,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 15:31:44,391 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 86 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:44,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 112 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:31:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 15:31:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-02 15:31:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 140 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:31:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2023-12-02 15:31:44,399 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 29 [2023-12-02 15:31:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:44,400 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2023-12-02 15:31:44,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2023-12-02 15:31:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 15:31:44,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:44,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 15:31:44,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:31:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:44,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:44,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1656044249, now seen corresponding path program 1 times [2023-12-02 15:31:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678747445] [2023-12-02 15:31:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:44,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125106015] [2023-12-02 15:31:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:44,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:44,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:44,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:31:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:44,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:31:44,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:44,695 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 15:31:44,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:44,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:44,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678747445] [2023-12-02 15:31:44,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:44,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125106015] [2023-12-02 15:31:44,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125106015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:44,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:31:44,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623780712] [2023-12-02 15:31:44,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:44,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:31:44,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:31:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:31:44,698 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:44,714 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2023-12-02 15:31:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:31:44,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-12-02 15:31:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:44,716 INFO L225 Difference]: With dead ends: 146 [2023-12-02 15:31:44,716 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 15:31:44,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 15:31:44,717 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:44,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:31:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 15:31:44,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-02 15:31:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 140 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:31:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2023-12-02 15:31:44,725 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 30 [2023-12-02 15:31:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:44,726 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2023-12-02 15:31:44,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2023-12-02 15:31:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 15:31:44,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:44,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:44,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:31:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:44,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:44,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1028427285, now seen corresponding path program 1 times [2023-12-02 15:31:44,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160245175] [2023-12-02 15:31:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:44,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:44,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:44,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295017285] [2023-12-02 15:31:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:44,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:44,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:44,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:44,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:31:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:44,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:31:44,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:45,042 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 15:31:45,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:45,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:45,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160245175] [2023-12-02 15:31:45,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295017285] [2023-12-02 15:31:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295017285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:45,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:45,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:31:45,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953387002] [2023-12-02 15:31:45,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:45,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:31:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:45,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:31:45,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:31:45,044 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:45,297 INFO L93 Difference]: Finished difference Result 258 states and 262 transitions. [2023-12-02 15:31:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:31:45,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-12-02 15:31:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:45,299 INFO L225 Difference]: With dead ends: 258 [2023-12-02 15:31:45,299 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 15:31:45,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:31:45,301 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 83 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:45,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 87 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:31:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 15:31:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 207. [2023-12-02 15:31:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 152 states have (on average 1.4671052631578947) internal successors, (223), 200 states have internal predecessors, (223), 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 15:31:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 233 transitions. [2023-12-02 15:31:45,310 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 233 transitions. Word has length 34 [2023-12-02 15:31:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:45,310 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 233 transitions. [2023-12-02 15:31:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 233 transitions. [2023-12-02 15:31:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 15:31:45,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:45,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:45,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:31:45,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:45,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:45,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:45,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1875420736, now seen corresponding path program 1 times [2023-12-02 15:31:45,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:45,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665804474] [2023-12-02 15:31:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:45,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:45,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457074615] [2023-12-02 15:31:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:45,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:45,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:45,526 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:45,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:31:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:45,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:31:45,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:45,620 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 15:31:45,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:45,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665804474] [2023-12-02 15:31:45,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457074615] [2023-12-02 15:31:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457074615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:45,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:31:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065673990] [2023-12-02 15:31:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:31:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:31:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:31:45,622 INFO L87 Difference]: Start difference. First operand 207 states and 233 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:45,709 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2023-12-02 15:31:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:31:45,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-12-02 15:31:45,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:45,711 INFO L225 Difference]: With dead ends: 209 [2023-12-02 15:31:45,711 INFO L226 Difference]: Without dead ends: 208 [2023-12-02 15:31:45,711 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 15:31:45,712 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 33 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 164 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:31:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-02 15:31:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2023-12-02 15:31:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 152 states have (on average 1.4605263157894737) internal successors, (222), 200 states have internal predecessors, (222), 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 15:31:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 232 transitions. [2023-12-02 15:31:45,719 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 232 transitions. Word has length 37 [2023-12-02 15:31:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:45,719 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 232 transitions. [2023-12-02 15:31:45,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 232 transitions. [2023-12-02 15:31:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 15:31:45,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:45,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:45,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:31:45,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:45,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:45,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1991499439, now seen corresponding path program 1 times [2023-12-02 15:31:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814381674] [2023-12-02 15:31:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:45,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876091391] [2023-12-02 15:31:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:45,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:45,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:45,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:45,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:31:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:45,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:31:45,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:46,042 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 15:31:46,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:31:46,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814381674] [2023-12-02 15:31:46,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876091391] [2023-12-02 15:31:46,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876091391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:46,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:31:46,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:31:46,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979228400] [2023-12-02 15:31:46,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:46,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:31:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:46,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:31:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:31:46,045 INFO L87 Difference]: Start difference. First operand 207 states and 232 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:46,143 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2023-12-02 15:31:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:31:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-12-02 15:31:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:46,145 INFO L225 Difference]: With dead ends: 208 [2023-12-02 15:31:46,145 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 15:31:46,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 15:31:46,146 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 27 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:46,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 169 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:31:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 15:31:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-02 15:31:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 152 states have (on average 1.4539473684210527) internal successors, (221), 200 states have internal predecessors, (221), 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 15:31:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 231 transitions. [2023-12-02 15:31:46,154 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 231 transitions. Word has length 38 [2023-12-02 15:31:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:46,154 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 231 transitions. [2023-12-02 15:31:46,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 231 transitions. [2023-12-02 15:31:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 15:31:46,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:46,156 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:31:46,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 15:31:46,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:31:46,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:46,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1724451823, now seen corresponding path program 1 times [2023-12-02 15:31:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:46,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289598361] [2023-12-02 15:31:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:46,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:46,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:46,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282018402] [2023-12-02 15:31:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:46,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:46,369 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:46,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:31:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:46,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:31:46,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:31:46,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:46,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:46,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289598361] [2023-12-02 15:31:46,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:46,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282018402] [2023-12-02 15:31:46,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282018402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [400174878] [2023-12-02 15:31:46,727 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:31:46,727 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:31:46,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:31:46,737 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:31:46,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:31:50,484 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:31:50,566 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:31:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [400174878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:31:55,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:31:55,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 20 [2023-12-02 15:31:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200611733] [2023-12-02 15:31:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:31:55,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:31:55,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:31:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:31:55,116 INFO L87 Difference]: Start difference. First operand 207 states and 231 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:56,467 INFO L93 Difference]: Finished difference Result 207 states and 231 transitions. [2023-12-02 15:31:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:31:56,467 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-12-02 15:31:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:56,468 INFO L225 Difference]: With dead ends: 207 [2023-12-02 15:31:56,469 INFO L226 Difference]: Without dead ends: 119 [2023-12-02 15:31:56,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 20 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=314, Invalid=742, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:31:56,470 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 336 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 14 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:31:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-02 15:31:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2023-12-02 15:31:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.0705882352941176) internal successors, (91), 89 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:31:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2023-12-02 15:31:56,477 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 40 [2023-12-02 15:31:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:56,477 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2023-12-02 15:31:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2023-12-02 15:31:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 15:31:56,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:56,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:31:56,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:31:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:56,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:31:56,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1918398916, now seen corresponding path program 1 times [2023-12-02 15:31:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:56,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474186653] [2023-12-02 15:31:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:56,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:31:56,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238489398] [2023-12-02 15:31:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:56,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:56,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:56,694 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:56,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:31:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:56,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:31:56,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:31:56,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:31:56,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474186653] [2023-12-02 15:31:56,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:31:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238489398] [2023-12-02 15:31:56,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238489398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:31:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [438382340] [2023-12-02 15:31:56,990 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:31:56,990 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:31:56,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:31:56,990 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:31:56,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:31:59,352 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:31:59,402 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:01,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5328#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 536870912 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 15:32:01,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:32:01,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:32:01,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 15:32:01,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236264010] [2023-12-02 15:32:01,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:32:01,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:32:01,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:01,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:32:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:32:01,850 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:32:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:32:02,024 INFO L93 Difference]: Finished difference Result 132 states and 135 transitions. [2023-12-02 15:32:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:32:02,024 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-12-02 15:32:02,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:32:02,025 INFO L225 Difference]: With dead ends: 132 [2023-12-02 15:32:02,026 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 15:32:02,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 21 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2023-12-02 15:32:02,027 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 135 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:32:02,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 60 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:32:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 15:32:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2023-12-02 15:32:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 113 states have (on average 1.0530973451327434) internal successors, (119), 117 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:32:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2023-12-02 15:32:02,033 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 41 [2023-12-02 15:32:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:32:02,034 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2023-12-02 15:32:02,034 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:32:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2023-12-02 15:32:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 15:32:02,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:32:02,035 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 15:32:02,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:32:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:32:02,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:32:02,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:32:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1787501861, now seen corresponding path program 1 times [2023-12-02 15:32:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:32:02,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272922786] [2023-12-02 15:32:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:32:02,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:32:02,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569541449] [2023-12-02 15:32:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:02,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:32:02,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:32:02,245 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:32:02,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:32:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:32:02,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:32:02,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:32:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:32:02,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:32:02,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:32:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272922786] [2023-12-02 15:32:02,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:32:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569541449] [2023-12-02 15:32:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569541449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:32:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1374902176] [2023-12-02 15:32:02,605 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:32:02,606 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:32:02,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:32:02,606 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:32:02,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:32:04,640 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:32:04,691 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:08,100 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5838#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:32:08,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:32:08,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:32:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 15:32:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330190849] [2023-12-02 15:32:08,101 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:32:08,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:32:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:32:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-12-02 15:32:08,103 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:32:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:32:08,248 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2023-12-02 15:32:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:32:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2023-12-02 15:32:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:32:08,250 INFO L225 Difference]: With dead ends: 130 [2023-12-02 15:32:08,250 INFO L226 Difference]: Without dead ends: 122 [2023-12-02 15:32:08,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 75 SyntacticMatches, 36 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:32:08,251 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 44 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:32:08,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 40 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:32:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-02 15:32:08,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-02 15:32:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 117 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:32:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2023-12-02 15:32:08,257 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 67 [2023-12-02 15:32:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:32:08,257 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2023-12-02 15:32:08,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:32:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2023-12-02 15:32:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 15:32:08,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:32:08,259 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1] [2023-12-02 15:32:08,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:32:08,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:32:08,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:32:08,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:32:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1817790284, now seen corresponding path program 1 times [2023-12-02 15:32:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:32:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060675739] [2023-12-02 15:32:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:32:08,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:32:08,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309359883] [2023-12-02 15:32:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:08,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:32:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:32:08,469 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:32:08,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:32:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:32:08,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:32:08,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:32:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:32:08,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:32:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:32:09,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:32:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060675739] [2023-12-02 15:32:09,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:32:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309359883] [2023-12-02 15:32:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309359883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:32:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621565850] [2023-12-02 15:32:09,304 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:32:09,304 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:32:09,304 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:32:09,304 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:32:09,304 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:32:11,430 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:32:11,479 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:15,265 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6639#(and (<= 2147483648 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-12-02 15:32:15,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:32:15,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:32:15,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 15:32:15,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564474860] [2023-12-02 15:32:15,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:32:15,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:32:15,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:32:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2023-12-02 15:32:15,267 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand has 14 states, 13 states have (on average 12.076923076923077) internal successors, (157), 14 states have internal predecessors, (157), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:32:17,845 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 15:32:19,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:32:21,861 WARN L539 Checker$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 15:32:23,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:32:25,978 WARN L539 Checker$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 15:32:27,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:32:29,982 WARN L539 Checker$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 15:32:32,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:32:34,016 WARN L539 Checker$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 15:32:36,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:32:38,201 WARN L539 Checker$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 15:32:40,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:32:42,204 WARN L539 Checker$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 15:32:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:32:42,233 INFO L93 Difference]: Finished difference Result 262 states and 272 transitions. [2023-12-02 15:32:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:32:42,234 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.076923076923077) internal successors, (157), 14 states have internal predecessors, (157), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 84 [2023-12-02 15:32:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:32:42,235 INFO L225 Difference]: With dead ends: 262 [2023-12-02 15:32:42,235 INFO L226 Difference]: Without dead ends: 261 [2023-12-02 15:32:42,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 177 SyntacticMatches, 44 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=228, Invalid=1104, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:32:42,237 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 524 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 31 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:32:42,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 88 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 527 Invalid, 13 Unknown, 0 Unchecked, 26.7s Time] [2023-12-02 15:32:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-02 15:32:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 233. [2023-12-02 15:32:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.0633484162895928) internal successors, (235), 225 states have internal predecessors, (235), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:32:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 247 transitions. [2023-12-02 15:32:42,254 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 247 transitions. Word has length 84 [2023-12-02 15:32:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:32:42,254 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 247 transitions. [2023-12-02 15:32:42,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.076923076923077) internal successors, (157), 14 states have internal predecessors, (157), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:32:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 247 transitions. [2023-12-02 15:32:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-02 15:32:42,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:32:42,256 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:32:42,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:32:42,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 15:32:42,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:32:42,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:32:42,457 INFO L85 PathProgramCache]: Analyzing trace with hash -99049915, now seen corresponding path program 2 times [2023-12-02 15:32:42,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:32:42,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78507542] [2023-12-02 15:32:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:32:42,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:32:42,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871579426] [2023-12-02 15:32:42,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:32:42,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:32:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:32:42,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:32:42,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:32:42,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 15:32:42,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:32:42,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:32:42,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:32:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:32:42,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:32:42,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:32:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78507542] [2023-12-02 15:32:42,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:32:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871579426] [2023-12-02 15:32:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871579426] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:32:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [508306171] [2023-12-02 15:32:42,850 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:32:42,850 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:32:42,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:32:42,851 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:32:42,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:32:44,941 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:32:44,990 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:49,460 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7523#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:32:49,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:32:49,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:32:49,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 15:32:49,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921939972] [2023-12-02 15:32:49,460 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:32:49,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:32:49,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:32:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:32:49,462 INFO L87 Difference]: Start difference. First operand 233 states and 247 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:32:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:32:49,742 INFO L93 Difference]: Finished difference Result 241 states and 254 transitions. [2023-12-02 15:32:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:32:49,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 104 [2023-12-02 15:32:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:32:49,744 INFO L225 Difference]: With dead ends: 241 [2023-12-02 15:32:49,744 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 15:32:49,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 127 SyntacticMatches, 56 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-12-02 15:32:49,745 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:32:49,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 63 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:32:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 15:32:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-12-02 15:32:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.0588235294117647) internal successors, (234), 225 states have internal predecessors, (234), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:32:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 246 transitions. [2023-12-02 15:32:49,757 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 246 transitions. Word has length 104 [2023-12-02 15:32:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:32:49,757 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 246 transitions. [2023-12-02 15:32:49,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:32:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 246 transitions. [2023-12-02 15:32:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 15:32:49,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:32:49,758 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2023-12-02 15:32:49,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 15:32:49,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:32:49,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:32:49,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:32:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -39322513, now seen corresponding path program 1 times [2023-12-02 15:32:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:32:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63936230] [2023-12-02 15:32:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:32:49,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:32:49,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692534752] [2023-12-02 15:32:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:49,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:32:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:32:49,969 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:32:49,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:32:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:32:50,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:32:50,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:32:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:32:50,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:32:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:32:50,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:32:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63936230] [2023-12-02 15:32:50,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:32:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692534752] [2023-12-02 15:32:50,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692534752] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:32:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1203163449] [2023-12-02 15:32:50,869 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:32:50,869 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:32:50,870 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:32:50,870 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:32:50,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:32:52,916 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:32:52,964 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:58,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8727#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 2147483648 (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|)) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2023-12-02 15:32:58,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:32:58,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:32:58,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-02 15:32:58,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753015320] [2023-12-02 15:32:58,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:32:58,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 15:32:58,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 15:32:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2023-12-02 15:32:58,308 INFO L87 Difference]: Start difference. First operand 233 states and 246 transitions. Second operand has 15 states, 14 states have (on average 14.785714285714286) internal successors, (207), 15 states have internal predecessors, (207), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:32:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:32:59,506 INFO L93 Difference]: Finished difference Result 234 states and 246 transitions. [2023-12-02 15:32:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:32:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 14.785714285714286) internal successors, (207), 15 states have internal predecessors, (207), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 112 [2023-12-02 15:32:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:32:59,508 INFO L225 Difference]: With dead ends: 234 [2023-12-02 15:32:59,509 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 15:32:59,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 244 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 15:32:59,510 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 218 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:32:59,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 108 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:32:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 15:32:59,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2023-12-02 15:32:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 221 states have (on average 1.0407239819004526) internal successors, (230), 224 states have internal predecessors, (230), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:32:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 242 transitions. [2023-12-02 15:32:59,522 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 242 transitions. Word has length 112 [2023-12-02 15:32:59,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:32:59,523 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 242 transitions. [2023-12-02 15:32:59,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 14.785714285714286) internal successors, (207), 15 states have internal predecessors, (207), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:32:59,523 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 242 transitions. [2023-12-02 15:32:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 15:32:59,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:32:59,524 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-12-02 15:32:59,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:32:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:32:59,724 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:32:59,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:32:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1069127804, now seen corresponding path program 2 times [2023-12-02 15:32:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:32:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702637991] [2023-12-02 15:32:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:32:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:32:59,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:32:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628086282] [2023-12-02 15:32:59,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:32:59,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:32:59,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:32:59,734 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:32:59,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:33:00,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:33:00,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:33:00,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:33:00,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 114 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:33:09,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:18,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702637991] [2023-12-02 15:33:18,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628086282] [2023-12-02 15:33:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628086282] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574287965] [2023-12-02 15:33:18,543 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:33:18,543 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:18,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:18,544 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:18,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:33:20,569 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:33:20,619 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:33:52,638 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9768#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 536870912 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 15:33:52,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:33:52,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 15:33:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184570099] [2023-12-02 15:33:52,639 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:33:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:33:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:33:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1025, Unknown=2, NotChecked=0, Total=1190 [2023-12-02 15:33:52,640 INFO L87 Difference]: Start difference. First operand 232 states and 242 transitions. Second operand has 11 states, 9 states have (on average 12.0) internal successors, (108), 11 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:34:08,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:34:10,960 WARN L539 Checker$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 15:34:13,017 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 15:34:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:13,028 INFO L93 Difference]: Finished difference Result 242 states and 250 transitions. [2023-12-02 15:34:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:34:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 12.0) internal successors, (108), 11 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 115 [2023-12-02 15:34:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:13,030 INFO L225 Difference]: With dead ends: 242 [2023-12-02 15:34:13,030 INFO L226 Difference]: Without dead ends: 241 [2023-12-02 15:34:13,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 187 SyntacticMatches, 61 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=258, Invalid=1380, Unknown=2, NotChecked=0, Total=1640 [2023-12-02 15:34:13,032 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 296 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:13,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 93 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 275 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 15:34:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-02 15:34:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 232. [2023-12-02 15:34:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 221 states have (on average 1.0361990950226245) internal successors, (229), 224 states have internal predecessors, (229), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:34:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 241 transitions. [2023-12-02 15:34:13,048 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 241 transitions. Word has length 115 [2023-12-02 15:34:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:13,048 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 241 transitions. [2023-12-02 15:34:13,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 12.0) internal successors, (108), 11 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:34:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 241 transitions. [2023-12-02 15:34:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:34:13,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:13,050 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2023-12-02 15:34:13,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:34:13,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 15:34:13,250 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:34:13,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1945279771, now seen corresponding path program 3 times [2023-12-02 15:34:13,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:13,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872833997] [2023-12-02 15:34:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:13,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:34:13,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195956138] [2023-12-02 15:34:13,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:34:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:13,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:13,262 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:13,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:34:13,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:34:13,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:34:13,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:34:13,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:34:13,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:34:14,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872833997] [2023-12-02 15:34:14,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:34:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195956138] [2023-12-02 15:34:14,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195956138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:34:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906664166] [2023-12-02 15:34:14,021 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:34:14,021 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:34:14,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:34:14,022 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:34:14,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:34:16,074 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:34:16,123 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:34:23,450 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10744#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:34:23,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:34:23,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:34:23,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 15:34:23,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168690979] [2023-12-02 15:34:23,450 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:34:23,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:34:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:23,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:34:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2023-12-02 15:34:23,452 INFO L87 Difference]: Start difference. First operand 232 states and 241 transitions. Second operand has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:34:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:24,024 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2023-12-02 15:34:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:34:24,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 141 [2023-12-02 15:34:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:24,027 INFO L225 Difference]: With dead ends: 240 [2023-12-02 15:34:24,027 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 15:34:24,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 180 SyntacticMatches, 76 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2023-12-02 15:34:24,028 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:24,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:34:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 15:34:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-12-02 15:34:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 221 states have (on average 1.0316742081447965) internal successors, (228), 224 states have internal predecessors, (228), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:34:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 240 transitions. [2023-12-02 15:34:24,052 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 240 transitions. Word has length 141 [2023-12-02 15:34:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:24,052 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 240 transitions. [2023-12-02 15:34:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:34:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 240 transitions. [2023-12-02 15:34:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 15:34:24,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:24,054 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-12-02 15:34:24,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:34:24,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 15:34:24,254 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:34:24,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash 81074150, now seen corresponding path program 3 times [2023-12-02 15:34:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:24,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769622756] [2023-12-02 15:34:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:24,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:24,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:34:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573765374] [2023-12-02 15:34:24,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:34:24,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:24,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:24,266 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:24,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:34:24,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:34:24,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:34:24,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 15:34:24,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 3 proven. 222 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 15:34:24,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:34:28,888 WARN L854 $PredicateComparison]: unable to prove that (or (< (+ (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2023-12-02 15:34:59,197 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (< 1073741823 .cse0) (< (+ (* .cse0 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) is different from false [2023-12-02 15:39:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 3 proven. 129 refuted. 0 times theorem prover too weak. 9 trivial. 93 not checked. [2023-12-02 15:39:24,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:39:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769622756] [2023-12-02 15:39:24,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:39:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573765374] [2023-12-02 15:39:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573765374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:39:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1701741895] [2023-12-02 15:39:24,599 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:39:24,599 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:39:24,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:39:24,599 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:39:24,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:39:26,917 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:39:26,966 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:39:35,804 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12189#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 536870912 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 15:39:35,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:39:35,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:39:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-02 15:39:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801178860] [2023-12-02 15:39:35,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:39:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:39:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:39:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:39:35,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=915, Unknown=6, NotChecked=126, Total=1190 [2023-12-02 15:39:35,807 INFO L87 Difference]: Start difference. First operand 232 states and 240 transitions. Second operand has 18 states, 16 states have (on average 17.625) internal successors, (282), 18 states have internal predecessors, (282), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:40:19,698 WARN L293 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 93 DAG size of output: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:40:21,702 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 15:40:23,789 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 15:40:25,852 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse0 (* .cse3 3)) (.cse2 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse4 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse5 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (< (+ |c_ULTIMATE.start_main_~x~0#1| .cse0 .cse1 .cse2) 536870911) (<= |c_ULTIMATE.start_main_~x~0#1| 100) (or (< 1073741814 (+ .cse3 (* |c_ULTIMATE.start_main_~y~0#1| 6))) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 90) (* .cse3 12) .cse1) (+ (div (+ (* (- 14) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse4 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 73))) 4) 536870812)) .cse5) (or (< (+ (* .cse3 9) (* |c_ULTIMATE.start_main_~y~0#1| 42) .cse1) (+ 536870876 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 37)) .cse4 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 10))) 4))) (< 1073741819 (+ .cse3 (* |c_ULTIMATE.start_main_~y~0#1| 4))) .cse5) (or (< (+ .cse0 .cse1 .cse2) (+ 536870911 (div (+ .cse4 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse5) (or (< 1073741822 (+ .cse3 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse3 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse4) 4))) .cse5)))) is different from false [2023-12-02 15:40:32,034 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (< (+ |c_ULTIMATE.start_main_~x~0#1| (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) 536870911) (or (< 1073741814 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 6))) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 90) (* .cse0 12) .cse1) (+ (div (+ (* (- 14) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 73))) 4) 536870812)) .cse3) (or (< (+ (* .cse0 9) (* |c_ULTIMATE.start_main_~y~0#1| 42) .cse1) (+ 536870876 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 37)) .cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 10))) 4))) (< 1073741819 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 4))) .cse3) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:40:34,048 WARN L539 Checker$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 15:40:36,342 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< 1073741823 .cse0) (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (or (< (+ (* .cse0 9) (* |c_ULTIMATE.start_main_~y~0#1| 42) .cse1) (+ 536870876 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 37)) .cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 10))) 4))) (< 1073741819 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 4))) .cse3) (< (+ |c_ULTIMATE.start_main_~x~0#1| .cse1) 536870912) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:40:38,351 WARN L539 Checker$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 15:40:40,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:41:39,875 WARN L539 Checker$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 15:41:41,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:41:44,016 WARN L539 Checker$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 15:41:46,018 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 15:41:48,082 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< (+ (* .cse0 9) (* |c_ULTIMATE.start_main_~y~0#1| 42) .cse1) (+ 536870876 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 37)) .cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 10))) 4))) (< 1073741819 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 4))) .cse3) (<= |c_ULTIMATE.start_main_~x~0#1| 536870911) (or (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:41:50,089 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< (+ (* .cse0 9) (* |c_ULTIMATE.start_main_~y~0#1| 42) .cse1) (+ 536870876 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 37)) .cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 10))) 4))) (< 1073741819 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 4))) .cse3) (or (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:41:58,216 WARN L539 Checker$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 15:42:00,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:02,255 WARN L539 Checker$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 15:42:04,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:06,738 WARN L539 Checker$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 15:42:09,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:11,019 WARN L539 Checker$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 15:42:13,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:15,192 WARN L539 Checker$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 15:42:17,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:19,377 WARN L539 Checker$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 15:42:21,413 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< 1073741823 .cse0) (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (< (+ |c_ULTIMATE.start_main_~x~0#1| .cse1) 536870912) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:42:23,419 WARN L539 Checker$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 15:42:25,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:27,645 WARN L539 Checker$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 15:42:29,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:31,785 WARN L539 Checker$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 15:42:33,790 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 15:42:35,798 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< 1073741823 .cse0) (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (<= |c_ULTIMATE.start_main_~x~0#1| 536870911) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:42:37,805 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< 1073741823 .cse0) (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:42:39,814 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (and (or (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ .cse2 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) .cse3) (or (< 1073741822 (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2))) (< (+ (* .cse0 6) (* |c_ULTIMATE.start_main_~y~0#1| 15) .cse1) (+ 536870903 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) .cse2) 4))) .cse3))) is different from false [2023-12-02 15:42:48,012 WARN L539 Checker$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 15:42:50,182 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (and (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (< 1073741823 .cse0) (< (+ (* .cse0 3) .cse1 (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (< (+ |c_ULTIMATE.start_main_~x~0#1| .cse1) 536870912))) is different from false [2023-12-02 15:42:52,244 WARN L539 Checker$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 15:42:54,255 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (< 1073741823 .cse0) (< (+ (* .cse0 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 3)) (+ 536870911 (div (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0)))) (<= |c_ULTIMATE.start_main_~x~0#1| 536870911)) is different from false [2023-12-02 15:42:56,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:58,680 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 15:42:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:59,377 INFO L93 Difference]: Finished difference Result 365 states and 378 transitions. [2023-12-02 15:42:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 15:42:59,378 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 17.625) internal successors, (282), 18 states have internal predecessors, (282), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 152 [2023-12-02 15:42:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:59,379 INFO L225 Difference]: With dead ends: 365 [2023-12-02 15:42:59,380 INFO L226 Difference]: Without dead ends: 364 [2023-12-02 15:42:59,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 343 SyntacticMatches, 87 SemanticMatches, 56 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 175.7s TimeCoverageRelationStatistics Valid=317, Invalid=1660, Unknown=55, NotChecked=1274, Total=3306 [2023-12-02 15:42:59,381 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 482 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 23 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 1713 IncrementalHoareTripleChecker+Unchecked, 64.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:59,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 280 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1166 Invalid, 28 Unknown, 1713 Unchecked, 64.2s Time] [2023-12-02 15:42:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-02 15:42:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 331. [2023-12-02 15:42:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.0315457413249212) internal successors, (327), 320 states have internal predecessors, (327), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:42:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 345 transitions. [2023-12-02 15:42:59,407 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 345 transitions. Word has length 152 [2023-12-02 15:42:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:59,407 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 345 transitions. [2023-12-02 15:42:59,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 17.625) internal successors, (282), 18 states have internal predecessors, (282), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:42:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 345 transitions. [2023-12-02 15:42:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-02 15:42:59,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:59,409 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-12-02 15:42:59,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:42:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:59,609 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:42:59,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1339143163, now seen corresponding path program 4 times [2023-12-02 15:42:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:59,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079809712] [2023-12-02 15:42:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:59,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:42:59,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217782339] [2023-12-02 15:42:59,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:42:59,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:59,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:59,620 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:59,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:42:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:59,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:42:59,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:43:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:43:00,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:43:01,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079809712] [2023-12-02 15:43:01,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:43:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217782339] [2023-12-02 15:43:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217782339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:43:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175381047] [2023-12-02 15:43:01,021 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:43:01,021 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:43:01,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:43:01,022 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:43:01,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:43:03,058 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:43:03,123 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:43:11,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13668#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:43:11,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:43:11,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:43:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 15:43:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697620505] [2023-12-02 15:43:11,986 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:43:11,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:43:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:43:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 15:43:11,987 INFO L87 Difference]: Start difference. First operand 331 states and 345 transitions. Second operand has 13 states, 12 states have (on average 13.666666666666666) internal successors, (164), 13 states have internal predecessors, (164), 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 15:43:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:12,517 INFO L93 Difference]: Finished difference Result 339 states and 352 transitions. [2023-12-02 15:43:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:43:12,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 13.666666666666666) internal successors, (164), 13 states have internal predecessors, (164), 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) Word has length 178 [2023-12-02 15:43:12,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:12,520 INFO L225 Difference]: With dead ends: 339 [2023-12-02 15:43:12,520 INFO L226 Difference]: Without dead ends: 331 [2023-12-02 15:43:12,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 266 SyntacticMatches, 96 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:43:12,521 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:12,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:43:12,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-02 15:43:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-02 15:43:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.028391167192429) internal successors, (326), 320 states have internal predecessors, (326), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:43:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 344 transitions. [2023-12-02 15:43:12,561 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 344 transitions. Word has length 178 [2023-12-02 15:43:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:12,562 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 344 transitions. [2023-12-02 15:43:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 13.666666666666666) internal successors, (164), 13 states have internal predecessors, (164), 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 15:43:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 344 transitions. [2023-12-02 15:43:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-02 15:43:12,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:12,564 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2023-12-02 15:43:12,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 15:43:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:43:12,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:43:12,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash 684361563, now seen corresponding path program 5 times [2023-12-02 15:43:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:12,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227901119] [2023-12-02 15:43:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:12,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:12,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:43:12,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429601423] [2023-12-02 15:43:12,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:43:12,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:43:12,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:43:12,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:43:12,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:43:12,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 15:43:12,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:43:12,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 15:43:12,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:43:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:43:13,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:43:13,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:13,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227901119] [2023-12-02 15:43:13,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:43:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429601423] [2023-12-02 15:43:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429601423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:43:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1684358073] [2023-12-02 15:43:13,892 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:43:13,893 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:43:13,893 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:43:13,893 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:43:13,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:43:16,019 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:43:16,069 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:43:27,543 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15069#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:43:27,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:43:27,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:43:27,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 15:43:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590541670] [2023-12-02 15:43:27,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:43:27,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:43:27,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:43:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 15:43:27,545 INFO L87 Difference]: Start difference. First operand 331 states and 344 transitions. Second operand has 14 states, 13 states have (on average 15.23076923076923) internal successors, (198), 14 states have internal predecessors, (198), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:43:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:29,158 INFO L93 Difference]: Finished difference Result 339 states and 351 transitions. [2023-12-02 15:43:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 15:43:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 15.23076923076923) internal successors, (198), 14 states have internal predecessors, (198), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 215 [2023-12-02 15:43:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:29,161 INFO L225 Difference]: With dead ends: 339 [2023-12-02 15:43:29,161 INFO L226 Difference]: Without dead ends: 331 [2023-12-02 15:43:29,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 284 SyntacticMatches, 116 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 15:43:29,162 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:29,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 279 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 15:43:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-02 15:43:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-02 15:43:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.025236593059937) internal successors, (325), 320 states have internal predecessors, (325), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:43:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 343 transitions. [2023-12-02 15:43:29,188 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 343 transitions. Word has length 215 [2023-12-02 15:43:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:29,189 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 343 transitions. [2023-12-02 15:43:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 15.23076923076923) internal successors, (198), 14 states have internal predecessors, (198), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:43:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 343 transitions. [2023-12-02 15:43:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-02 15:43:29,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:29,190 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1] [2023-12-02 15:43:29,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 15:43:29,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:43:29,391 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:43:29,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash 191967948, now seen corresponding path program 2 times [2023-12-02 15:43:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416353099] [2023-12-02 15:43:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:29,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:29,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:43:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227747707] [2023-12-02 15:43:29,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:43:29,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:43:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:43:29,405 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:43:29,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:43:45,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:43:45,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:43:45,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:43:46,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 213 proven. 6 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-02 15:44:08,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:44:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-02 15:44:08,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:08,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416353099] [2023-12-02 15:44:08,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:44:08,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227747707] [2023-12-02 15:44:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227747707] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:44:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:44:08,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-02 15:44:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415294204] [2023-12-02 15:44:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:08,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:44:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:44:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:44:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:44:08,780 INFO L87 Difference]: Start difference. First operand 331 states and 343 transitions. Second operand has 7 states, 5 states have (on average 11.4) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:44:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:09,034 INFO L93 Difference]: Finished difference Result 331 states and 343 transitions. [2023-12-02 15:44:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:44:09,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.4) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 232 [2023-12-02 15:44:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:09,036 INFO L225 Difference]: With dead ends: 331 [2023-12-02 15:44:09,036 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 15:44:09,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:44:09,037 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 76 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:09,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 18 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:44:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 15:44:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-12-02 15:44:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 317 states have (on average 1.0157728706624605) internal successors, (322), 319 states have internal predecessors, (322), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:44:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 340 transitions. [2023-12-02 15:44:09,076 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 340 transitions. Word has length 232 [2023-12-02 15:44:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:09,077 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 340 transitions. [2023-12-02 15:44:09,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.4) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:44:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 340 transitions. [2023-12-02 15:44:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-02 15:44:09,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:09,079 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2023-12-02 15:44:09,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:44:09,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 15:44:09,279 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:44:09,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash -578303547, now seen corresponding path program 6 times [2023-12-02 15:44:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:09,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985879676] [2023-12-02 15:44:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:09,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:44:09,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:44:09,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694766744] [2023-12-02 15:44:09,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:44:09,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:44:09,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:44:09,293 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:44:09,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:44:09,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:44:09,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:44:09,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 15:44:09,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 15:44:10,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:44:10,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985879676] [2023-12-02 15:44:10,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:44:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694766744] [2023-12-02 15:44:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694766744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:44:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [856663149] [2023-12-02 15:44:10,481 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:44:10,481 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:44:10,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:44:10,481 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:44:10,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:44:12,594 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:44:12,650 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:44:27,421 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18686#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:44:27,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:44:27,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:44:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 15:44:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109714277] [2023-12-02 15:44:27,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:44:27,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 15:44:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:44:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 15:44:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:44:27,424 INFO L87 Difference]: Start difference. First operand 330 states and 340 transitions. Second operand has 16 states, 15 states have (on average 15.466666666666667) internal successors, (232), 16 states have internal predecessors, (232), 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 15:44:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:29,658 INFO L93 Difference]: Finished difference Result 338 states and 347 transitions. [2023-12-02 15:44:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:44:29,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 15.466666666666667) internal successors, (232), 16 states have internal predecessors, (232), 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) Word has length 252 [2023-12-02 15:44:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:29,660 INFO L225 Difference]: With dead ends: 338 [2023-12-02 15:44:29,660 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 15:44:29,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 336 SyntacticMatches, 136 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:44:29,661 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:29,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 301 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 15:44:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 15:44:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-12-02 15:44:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 317 states have (on average 1.0126182965299684) internal successors, (321), 319 states have internal predecessors, (321), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:44:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 339 transitions. [2023-12-02 15:44:29,687 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 339 transitions. Word has length 252 [2023-12-02 15:44:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:29,687 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 339 transitions. [2023-12-02 15:44:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 15.466666666666667) internal successors, (232), 16 states have internal predecessors, (232), 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 15:44:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 339 transitions. [2023-12-02 15:44:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-02 15:44:29,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:29,689 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2023-12-02 15:44:29,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:44:29,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 15:44:29,890 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:44:29,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash -478109285, now seen corresponding path program 7 times [2023-12-02 15:44:29,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:29,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505589324] [2023-12-02 15:44:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:44:29,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:44:29,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139776660] [2023-12-02 15:44:29,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:44:29,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:44:29,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:44:29,908 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:44:29,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 15:44:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:30,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 15:44:30,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 910 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:44:31,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:44:31,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505589324] [2023-12-02 15:44:31,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:44:31,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139776660] [2023-12-02 15:44:31,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139776660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:44:31,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1282015075] [2023-12-02 15:44:31,272 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:44:31,272 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:44:31,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:44:31,273 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:44:31,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:44:33,359 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:44:33,410 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:44:50,613 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20311#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:44:50,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:44:50,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:44:50,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-02 15:44:50,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755304033] [2023-12-02 15:44:50,614 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:44:50,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:44:50,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:44:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:44:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 15:44:50,616 INFO L87 Difference]: Start difference. First operand 330 states and 339 transitions. Second operand has 18 states, 17 states have (on average 15.647058823529411) internal successors, (266), 18 states have internal predecessors, (266), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:44:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:53,050 INFO L93 Difference]: Finished difference Result 338 states and 346 transitions. [2023-12-02 15:44:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 15:44:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 15.647058823529411) internal successors, (266), 18 states have internal predecessors, (266), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 289 [2023-12-02 15:44:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:53,053 INFO L225 Difference]: With dead ends: 338 [2023-12-02 15:44:53,053 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 15:44:53,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 388 SyntacticMatches, 156 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 15:44:53,054 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 3014 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:53,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 406 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3014 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 15:44:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 15:44:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-12-02 15:44:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 317 states have (on average 1.0094637223974763) internal successors, (320), 319 states have internal predecessors, (320), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:44:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 338 transitions. [2023-12-02 15:44:53,081 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 338 transitions. Word has length 289 [2023-12-02 15:44:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:53,082 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 338 transitions. [2023-12-02 15:44:53,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 15.647058823529411) internal successors, (266), 18 states have internal predecessors, (266), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:44:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 338 transitions. [2023-12-02 15:44:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-02 15:44:53,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:53,084 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1] [2023-12-02 15:44:53,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 15:44:53,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:44:53,285 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:44:53,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1965102981, now seen corresponding path program 8 times [2023-12-02 15:44:53,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:53,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395971392] [2023-12-02 15:44:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:44:53,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:44:53,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239240590] [2023-12-02 15:44:53,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:44:53,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:44:53,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:44:53,301 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:44:53,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:44:55,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-02 15:44:55,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:44:55,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 15:44:55,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:44:56,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:44:56,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:56,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395971392] [2023-12-02 15:44:56,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:44:56,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239240590] [2023-12-02 15:44:56,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239240590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:44:56,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1834890890] [2023-12-02 15:44:56,511 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 15:44:56,512 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:44:56,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:44:56,512 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:44:56,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:44:58,545 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 115 for LOIs [2023-12-02 15:44:58,594 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:45:17,815 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22049#(and (<= 2147483648 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 536870911) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|))' at error location [2023-12-02 15:45:17,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:45:17,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:45:17,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-02 15:45:17,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692486499] [2023-12-02 15:45:17,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:45:17,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:45:17,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:45:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:45:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 15:45:17,819 INFO L87 Difference]: Start difference. First operand 330 states and 338 transitions. Second operand has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:45:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:20,950 INFO L93 Difference]: Finished difference Result 362 states and 371 transitions. [2023-12-02 15:45:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 15:45:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 326 [2023-12-02 15:45:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:20,953 INFO L225 Difference]: With dead ends: 362 [2023-12-02 15:45:20,953 INFO L226 Difference]: Without dead ends: 354 [2023-12-02 15:45:20,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 440 SyntacticMatches, 176 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3286 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 15:45:20,954 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 12 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 4469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:20,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 595 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4469 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 15:45:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-02 15:45:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2023-12-02 15:45:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 338 states have (on average 1.0088757396449703) internal successors, (341), 340 states have internal predecessors, (341), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 15:45:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 361 transitions. [2023-12-02 15:45:20,982 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 361 transitions. Word has length 326 [2023-12-02 15:45:20,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:20,982 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 361 transitions. [2023-12-02 15:45:20,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:45:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 361 transitions. [2023-12-02 15:45:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-02 15:45:20,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:20,985 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1] [2023-12-02 15:45:20,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:45:21,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:45:21,185 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 15:45:21,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:21,186 INFO L85 PathProgramCache]: Analyzing trace with hash -213592260, now seen corresponding path program 4 times [2023-12-02 15:45:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:45:21,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588038219] [2023-12-02 15:45:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:45:21,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:45:21,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179974132] [2023-12-02 15:45:21,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:45:21,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:45:21,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:45:21,202 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:45:21,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1696e09-4b83-42f0-8e68-0737d664f795/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:45:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:21,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 15:45:21,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 3 proven. 1292 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 15:45:22,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:27,444 WARN L854 $PredicateComparison]: unable to prove that (or (< (+ (* 6 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (* |c_ULTIMATE.start_main_~y~0#1| 273) (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 63)) (+ (div (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 2))) 4) 536870471)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2023-12-02 15:46:34,020 WARN L854 $PredicateComparison]: unable to prove that (or (< (+ (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 81) (* 6 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (* |c_ULTIMATE.start_main_~y~0#1| 420)) (+ 536870128 (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 6)) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 13)) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false