./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.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_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/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_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/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_12eb2098-932a-4258-b99b-a1ba156f043d/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 a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:29:43,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:29:43,838 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 19:29:43,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:29:43,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:29:43,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:29:43,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:29:43,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:29:43,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:29:43,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:29:43,869 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:29:43,870 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:29:43,870 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:29:43,871 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:29:43,872 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:29:43,872 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:29:43,873 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:29:43,873 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:29:43,874 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:29:43,874 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:29:43,875 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:29:43,876 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:29:43,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:29:43,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:29:43,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:29:43,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:29:43,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:29:43,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:29:43,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:29:43,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:29:43,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:29:43,881 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 19:29:43,881 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:29:43,881 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:29:43,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:29:43,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:29:43,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:29:43,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:29:43,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:29:43,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:29:43,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:29:43,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:29:43,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:29:43,883 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:29:43,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:29:43,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:29:43,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:29:43,884 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:29:43,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:29:43,884 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_12eb2098-932a-4258-b99b-a1ba156f043d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 [2023-12-02 19:29:44,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:29:44,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:29:44,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:29:44,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:29:44,150 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:29:44,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2023-12-02 19:29:46,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:29:47,097 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:29:47,097 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2023-12-02 19:29:47,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/data/22ef07126/c0f532caecf24012b435965669189f9c/FLAG75918c205 [2023-12-02 19:29:47,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/data/22ef07126/c0f532caecf24012b435965669189f9c [2023-12-02 19:29:47,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:29:47,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:29:47,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:29:47,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:29:47,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:29:47,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cf53c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47, skipping insertion in model container [2023-12-02 19:29:47,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,150 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:29:47,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:29:47,326 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:29:47,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:29:47,361 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:29:47,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47 WrapperNode [2023-12-02 19:29:47,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:29:47,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:29:47,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:29:47,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:29:47,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,404 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2023-12-02 19:29:47,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:29:47,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:29:47,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:29:47,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:29:47,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:29:47,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:29:47,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:29:47,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:29:47,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (1/1) ... [2023-12-02 19:29:47,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:29:47,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:47,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:29:47,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:29:47,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:29:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:29:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:29:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:29:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:29:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:29:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 19:29:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 19:29:47,582 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:29:47,584 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:29:47,919 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:29:47,958 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:29:47,958 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:29:47,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:47 BoogieIcfgContainer [2023-12-02 19:29:47,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:29:47,963 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:29:47,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:29:47,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:29:47,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:29:47" (1/3) ... [2023-12-02 19:29:47,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b8b7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:47, skipping insertion in model container [2023-12-02 19:29:47,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:47" (2/3) ... [2023-12-02 19:29:47,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b8b7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:47, skipping insertion in model container [2023-12-02 19:29:47,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:47" (3/3) ... [2023-12-02 19:29:47,970 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound5.c [2023-12-02 19:29:47,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:29:47,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-12-02 19:29:48,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:29:48,040 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;@51cc1bd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:29:48,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-12-02 19:29:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 125 states have internal predecessors, (128), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:29:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 19:29:48,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:48,051 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:48,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:48,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash 688830049, now seen corresponding path program 1 times [2023-12-02 19:29:48,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:48,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802541454] [2023-12-02 19:29:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:48,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802541454] [2023-12-02 19:29:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802541454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:48,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:29:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480063194] [2023-12-02 19:29:48,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:48,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:29:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:29:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:29:48,267 INFO L87 Difference]: Start difference. First operand has 132 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 125 states have internal predecessors, (128), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 19:29:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:48,404 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2023-12-02 19:29:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:29:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 9 [2023-12-02 19:29:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:48,416 INFO L225 Difference]: With dead ends: 180 [2023-12-02 19:29:48,417 INFO L226 Difference]: Without dead ends: 125 [2023-12-02 19:29:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 19:29:48,423 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 118 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:48,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 72 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-02 19:29:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-02 19:29:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 66 states have (on average 1.8333333333333333) internal successors, (121), 119 states have internal predecessors, (121), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:29:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-12-02 19:29:48,473 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 9 [2023-12-02 19:29:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:48,475 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-12-02 19:29:48,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 19:29:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-12-02 19:29:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:29:48,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:48,477 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:29:48,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:48,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:48,479 INFO L85 PathProgramCache]: Analyzing trace with hash -121104922, now seen corresponding path program 1 times [2023-12-02 19:29:48,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:48,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534862800] [2023-12-02 19:29:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:48,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:48,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:48,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534862800] [2023-12-02 19:29:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534862800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:48,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:48,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:29:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672330686] [2023-12-02 19:29:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:29:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:29:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:29:48,536 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 19:29:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:48,634 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2023-12-02 19:29:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:29:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 10 [2023-12-02 19:29:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:48,637 INFO L225 Difference]: With dead ends: 125 [2023-12-02 19:29:48,637 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 19:29:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 19:29:48,639 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 112 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:48,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 69 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 19:29:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 19:29:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 66 states have (on average 1.7727272727272727) internal successors, (117), 115 states have internal predecessors, (117), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:29:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2023-12-02 19:29:48,653 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 10 [2023-12-02 19:29:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:48,654 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2023-12-02 19:29:48,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 19:29:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2023-12-02 19:29:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 19:29:48,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:48,655 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:48,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:29:48,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:48,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash 540714755, now seen corresponding path program 1 times [2023-12-02 19:29:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:48,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574941098] [2023-12-02 19:29:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:48,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:48,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:48,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574941098] [2023-12-02 19:29:48,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574941098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:48,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:48,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219775940] [2023-12-02 19:29:48,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:48,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:48,726 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 19:29:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:48,869 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-12-02 19:29:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:29:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 11 [2023-12-02 19:29:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:48,872 INFO L225 Difference]: With dead ends: 121 [2023-12-02 19:29:48,872 INFO L226 Difference]: Without dead ends: 118 [2023-12-02 19:29:48,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:48,874 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:48,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 57 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-02 19:29:48,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-02 19:29:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 66 states have (on average 1.7272727272727273) internal successors, (114), 112 states have internal predecessors, (114), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:29:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2023-12-02 19:29:48,885 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 11 [2023-12-02 19:29:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:48,886 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2023-12-02 19:29:48,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 19:29:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2023-12-02 19:29:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:29:48,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:48,887 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:48,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:29:48,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:48,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash -417711736, now seen corresponding path program 1 times [2023-12-02 19:29:48,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:48,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744498915] [2023-12-02 19:29:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:48,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744498915] [2023-12-02 19:29:48,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744498915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:48,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:48,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785027331] [2023-12-02 19:29:48,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:48,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:48,947 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 19:29:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:49,081 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-12-02 19:29:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:29:49,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 12 [2023-12-02 19:29:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:49,083 INFO L225 Difference]: With dead ends: 118 [2023-12-02 19:29:49,083 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 19:29:49,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:49,085 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 212 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:49,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 57 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 19:29:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-02 19:29:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 109 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:29:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2023-12-02 19:29:49,096 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 12 [2023-12-02 19:29:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:49,096 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2023-12-02 19:29:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 19:29:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2023-12-02 19:29:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 19:29:49,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:49,097 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:49,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:29:49,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:49,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1989018102, now seen corresponding path program 1 times [2023-12-02 19:29:49,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:49,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306245231] [2023-12-02 19:29:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:49,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:49,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:49,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43643222] [2023-12-02 19:29:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:49,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:49,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:49,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:49,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:29:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:49,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:49,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:49,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:49,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306245231] [2023-12-02 19:29:49,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43643222] [2023-12-02 19:29:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43643222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:29:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504349554] [2023-12-02 19:29:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:49,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:29:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:29:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:29:49,193 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:49,243 INFO L93 Difference]: Finished difference Result 218 states and 222 transitions. [2023-12-02 19:29:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:29:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-12-02 19:29:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:49,245 INFO L225 Difference]: With dead ends: 218 [2023-12-02 19:29:49,246 INFO L226 Difference]: Without dead ends: 212 [2023-12-02 19:29:49,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 19:29:49,247 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 95 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:49,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:29:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-02 19:29:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 140. [2023-12-02 19:29:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.6666666666666667) internal successors, (150), 133 states have internal predecessors, (150), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:29:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2023-12-02 19:29:49,262 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 14 [2023-12-02 19:29:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:49,263 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2023-12-02 19:29:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2023-12-02 19:29:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 19:29:49,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:49,264 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:49,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:29:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:49,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:49,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash -185947508, now seen corresponding path program 1 times [2023-12-02 19:29:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708272064] [2023-12-02 19:29:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:49,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594368675] [2023-12-02 19:29:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:49,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:49,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:49,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:49,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:29:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:49,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:49,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:49,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:49,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:49,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708272064] [2023-12-02 19:29:49,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:49,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594368675] [2023-12-02 19:29:49,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594368675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:49,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:49,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:29:49,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495839366] [2023-12-02 19:29:49,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:49,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:29:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:29:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:29:49,541 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:49,596 INFO L93 Difference]: Finished difference Result 243 states and 263 transitions. [2023-12-02 19:29:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:29:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-02 19:29:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:49,598 INFO L225 Difference]: With dead ends: 243 [2023-12-02 19:29:49,598 INFO L226 Difference]: Without dead ends: 237 [2023-12-02 19:29:49,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 19:29:49,600 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 93 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:49,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:29:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-02 19:29:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 189. [2023-12-02 19:29:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.6666666666666667) internal successors, (230), 181 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2023-12-02 19:29:49,615 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 16 [2023-12-02 19:29:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:49,615 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2023-12-02 19:29:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2023-12-02 19:29:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 19:29:49,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:49,616 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:49,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:29:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:49,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:49,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1693073166, now seen corresponding path program 1 times [2023-12-02 19:29:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456228456] [2023-12-02 19:29:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:49,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:49,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707086119] [2023-12-02 19:29:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:49,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:49,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:49,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:49,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:29:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:49,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:29:49,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:49,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:49,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456228456] [2023-12-02 19:29:49,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707086119] [2023-12-02 19:29:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707086119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:49,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182327492] [2023-12-02 19:29:49,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:49,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:49,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:49,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:49,909 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:50,070 INFO L93 Difference]: Finished difference Result 268 states and 311 transitions. [2023-12-02 19:29:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:29:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-02 19:29:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:50,072 INFO L225 Difference]: With dead ends: 268 [2023-12-02 19:29:50,072 INFO L226 Difference]: Without dead ends: 266 [2023-12-02 19:29:50,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:50,074 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 177 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:50,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 232 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-02 19:29:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 190. [2023-12-02 19:29:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 139 states have (on average 1.6546762589928057) internal successors, (230), 182 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 240 transitions. [2023-12-02 19:29:50,088 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 240 transitions. Word has length 18 [2023-12-02 19:29:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:50,089 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 240 transitions. [2023-12-02 19:29:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 240 transitions. [2023-12-02 19:29:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:29:50,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:50,090 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:50,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:29:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:50,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:50,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 945660658, now seen corresponding path program 1 times [2023-12-02 19:29:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090674881] [2023-12-02 19:29:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:50,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73412406] [2023-12-02 19:29:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:50,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:50,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:29:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:50,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:29:50,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:50,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:50,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090674881] [2023-12-02 19:29:50,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:50,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73412406] [2023-12-02 19:29:50,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73412406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:50,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:50,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:50,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211275515] [2023-12-02 19:29:50,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:50,367 INFO L87 Difference]: Start difference. First operand 190 states and 240 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:50,527 INFO L93 Difference]: Finished difference Result 266 states and 309 transitions. [2023-12-02 19:29:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:29:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-02 19:29:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:50,530 INFO L225 Difference]: With dead ends: 266 [2023-12-02 19:29:50,530 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 19:29:50,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:50,531 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 172 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:50,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 234 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 19:29:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 191. [2023-12-02 19:29:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6428571428571428) internal successors, (230), 183 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 240 transitions. [2023-12-02 19:29:50,544 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 240 transitions. Word has length 19 [2023-12-02 19:29:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:50,544 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 240 transitions. [2023-12-02 19:29:50,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 240 transitions. [2023-12-02 19:29:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:29:50,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:50,546 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:50,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 19:29:50,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:50,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:50,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -749290608, now seen corresponding path program 1 times [2023-12-02 19:29:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587223521] [2023-12-02 19:29:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:50,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422106770] [2023-12-02 19:29:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:50,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:50,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:29:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:50,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:29:50,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:50,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:50,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:50,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587223521] [2023-12-02 19:29:50,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422106770] [2023-12-02 19:29:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422106770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:50,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:50,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783467916] [2023-12-02 19:29:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:50,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:50,827 INFO L87 Difference]: Start difference. First operand 191 states and 240 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:50,973 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2023-12-02 19:29:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:29:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 19:29:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:50,976 INFO L225 Difference]: With dead ends: 253 [2023-12-02 19:29:50,976 INFO L226 Difference]: Without dead ends: 251 [2023-12-02 19:29:50,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:50,977 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 194 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:50,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 233 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-02 19:29:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 191. [2023-12-02 19:29:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6214285714285714) internal successors, (227), 183 states have internal predecessors, (227), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 237 transitions. [2023-12-02 19:29:50,990 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 237 transitions. Word has length 20 [2023-12-02 19:29:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:50,990 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 237 transitions. [2023-12-02 19:29:50,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 237 transitions. [2023-12-02 19:29:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 19:29:50,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:50,991 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:50,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 19:29:51,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:51,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:51,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1753172300, now seen corresponding path program 1 times [2023-12-02 19:29:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:51,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675756996] [2023-12-02 19:29:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:51,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:51,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:51,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228720959] [2023-12-02 19:29:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:51,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:51,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:51,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:51,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:29:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:51,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:29:51,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:51,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:51,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:51,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675756996] [2023-12-02 19:29:51,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:51,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228720959] [2023-12-02 19:29:51,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228720959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:51,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:51,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:51,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527089269] [2023-12-02 19:29:51,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:51,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:51,267 INFO L87 Difference]: Start difference. First operand 191 states and 237 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:51,416 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2023-12-02 19:29:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:29:51,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-02 19:29:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:51,419 INFO L225 Difference]: With dead ends: 251 [2023-12-02 19:29:51,419 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 19:29:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:51,420 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 189 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 235 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 19:29:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 191. [2023-12-02 19:29:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6) internal successors, (224), 183 states have internal predecessors, (224), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 234 transitions. [2023-12-02 19:29:51,432 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 234 transitions. Word has length 21 [2023-12-02 19:29:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:51,433 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 234 transitions. [2023-12-02 19:29:51,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 234 transitions. [2023-12-02 19:29:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:29:51,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:51,434 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] [2023-12-02 19:29:51,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 19:29:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:29:51,635 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:51,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1486233618, now seen corresponding path program 1 times [2023-12-02 19:29:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:51,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792749651] [2023-12-02 19:29:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:51,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:51,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710658013] [2023-12-02 19:29:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:51,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:51,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:51,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:51,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 19:29:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:51,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:29:51,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:51,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:51,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792749651] [2023-12-02 19:29:51,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710658013] [2023-12-02 19:29:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710658013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:51,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:29:51,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247149811] [2023-12-02 19:29:51,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:51,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:29:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:29:51,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:51,726 INFO L87 Difference]: Start difference. First operand 191 states and 234 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:51,906 INFO L93 Difference]: Finished difference Result 260 states and 299 transitions. [2023-12-02 19:29:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:29:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-02 19:29:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:51,908 INFO L225 Difference]: With dead ends: 260 [2023-12-02 19:29:51,909 INFO L226 Difference]: Without dead ends: 258 [2023-12-02 19:29:51,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:29:51,910 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 156 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:51,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 292 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-02 19:29:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 194. [2023-12-02 19:29:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 143 states have (on average 1.5804195804195804) internal successors, (226), 186 states have internal predecessors, (226), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 236 transitions. [2023-12-02 19:29:51,922 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 236 transitions. Word has length 22 [2023-12-02 19:29:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:51,922 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 236 transitions. [2023-12-02 19:29:51,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 236 transitions. [2023-12-02 19:29:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 19:29:51,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:51,924 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:51,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 19:29:52,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 19:29:52,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:52,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1171398026, now seen corresponding path program 1 times [2023-12-02 19:29:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:52,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308909738] [2023-12-02 19:29:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:52,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:52,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339870681] [2023-12-02 19:29:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:52,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:52,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:52,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 19:29:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:52,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:29:52,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:52,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:52,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308909738] [2023-12-02 19:29:52,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339870681] [2023-12-02 19:29:52,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339870681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:52,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:52,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:29:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774522188] [2023-12-02 19:29:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:29:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:29:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:52,242 INFO L87 Difference]: Start difference. First operand 194 states and 236 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:52,453 INFO L93 Difference]: Finished difference Result 262 states and 297 transitions. [2023-12-02 19:29:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:29:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-12-02 19:29:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:52,455 INFO L225 Difference]: With dead ends: 262 [2023-12-02 19:29:52,455 INFO L226 Difference]: Without dead ends: 260 [2023-12-02 19:29:52,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:29:52,456 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 238 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:52,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 260 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:29:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-02 19:29:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 195. [2023-12-02 19:29:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 144 states have (on average 1.5694444444444444) internal successors, (226), 187 states have internal predecessors, (226), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2023-12-02 19:29:52,465 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 23 [2023-12-02 19:29:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:52,465 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2023-12-02 19:29:52,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:29:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2023-12-02 19:29:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 19:29:52,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:52,467 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:52,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 19:29:52,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 19:29:52,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:52,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1953600364, now seen corresponding path program 1 times [2023-12-02 19:29:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:52,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712073052] [2023-12-02 19:29:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:52,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054576749] [2023-12-02 19:29:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:52,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:52,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:52,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:52,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 19:29:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:52,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:29:52,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:29:52,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:29:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:29:53,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712073052] [2023-12-02 19:29:53,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054576749] [2023-12-02 19:29:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054576749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:29:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1508835191] [2023-12-02 19:29:53,100 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 19:29:53,100 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:29:53,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:29:53,107 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:29:53,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:29:53,455 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:29:53,496 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:29:54,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1508835191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:54,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:29:54,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 6] total 19 [2023-12-02 19:29:54,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281841760] [2023-12-02 19:29:54,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:54,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:29:54,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:29:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:29:54,372 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand has 11 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 19:29:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:54,933 INFO L93 Difference]: Finished difference Result 236 states and 271 transitions. [2023-12-02 19:29:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:29:54,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 24 [2023-12-02 19:29:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:54,935 INFO L225 Difference]: With dead ends: 236 [2023-12-02 19:29:54,936 INFO L226 Difference]: Without dead ends: 196 [2023-12-02 19:29:54,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:29:54,937 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 248 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:54,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 124 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:29:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-02 19:29:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-02 19:29:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 145 states have (on average 1.5241379310344827) internal successors, (221), 188 states have internal predecessors, (221), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2023-12-02 19:29:54,957 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 24 [2023-12-02 19:29:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:54,958 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2023-12-02 19:29:54,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 19:29:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2023-12-02 19:29:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 19:29:54,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:54,959 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:54,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 19:29:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 19:29:55,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:55,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1475602827, now seen corresponding path program 1 times [2023-12-02 19:29:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631077111] [2023-12-02 19:29:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:55,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031685940] [2023-12-02 19:29:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:55,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:55,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:55,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:55,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 19:29:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:55,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:55,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:55,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:55,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631077111] [2023-12-02 19:29:55,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031685940] [2023-12-02 19:29:55,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031685940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:55,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531472521] [2023-12-02 19:29:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:55,271 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:55,315 INFO L93 Difference]: Finished difference Result 196 states and 231 transitions. [2023-12-02 19:29:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:29:55,315 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2023-12-02 19:29:55,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:55,317 INFO L225 Difference]: With dead ends: 196 [2023-12-02 19:29:55,317 INFO L226 Difference]: Without dead ends: 195 [2023-12-02 19:29:55,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:55,318 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:55,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 199 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:29:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-02 19:29:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-12-02 19:29:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 187 states have internal predecessors, (219), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 229 transitions. [2023-12-02 19:29:55,331 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 229 transitions. Word has length 42 [2023-12-02 19:29:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:55,332 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 229 transitions. [2023-12-02 19:29:55,332 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 229 transitions. [2023-12-02 19:29:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 19:29:55,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:55,333 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:55,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 19:29:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 19:29:55,534 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:55,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1500952490, now seen corresponding path program 1 times [2023-12-02 19:29:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333118151] [2023-12-02 19:29:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:55,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:55,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379597179] [2023-12-02 19:29:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:55,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:55,544 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:55,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 19:29:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:55,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:55,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:55,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:55,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333118151] [2023-12-02 19:29:55,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379597179] [2023-12-02 19:29:55,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379597179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:55,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:55,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:55,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605779081] [2023-12-02 19:29:55,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:55,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:55,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:55,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:55,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:55,644 INFO L87 Difference]: Start difference. First operand 195 states and 229 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:55,692 INFO L93 Difference]: Finished difference Result 206 states and 241 transitions. [2023-12-02 19:29:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:29:55,693 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-12-02 19:29:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:55,694 INFO L225 Difference]: With dead ends: 206 [2023-12-02 19:29:55,695 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 19:29:55,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:55,696 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 13 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:55,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 309 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:29:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 19:29:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2023-12-02 19:29:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 195 states have internal predecessors, (229), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 239 transitions. [2023-12-02 19:29:55,710 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 239 transitions. Word has length 43 [2023-12-02 19:29:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:55,711 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 239 transitions. [2023-12-02 19:29:55,711 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 239 transitions. [2023-12-02 19:29:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 19:29:55,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:55,712 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:55,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 19:29:55,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 19:29:55,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:55,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash -671799420, now seen corresponding path program 1 times [2023-12-02 19:29:55,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222302742] [2023-12-02 19:29:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:55,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027761134] [2023-12-02 19:29:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:55,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:55,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:55,928 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:55,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 19:29:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:55,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:55,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:56,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:56,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:56,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222302742] [2023-12-02 19:29:56,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:56,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027761134] [2023-12-02 19:29:56,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027761134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:56,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:56,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:56,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360449616] [2023-12-02 19:29:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:56,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:56,032 INFO L87 Difference]: Start difference. First operand 203 states and 239 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:56,077 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2023-12-02 19:29:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:29:56,078 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-12-02 19:29:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:56,079 INFO L225 Difference]: With dead ends: 203 [2023-12-02 19:29:56,079 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 19:29:56,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:56,080 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 75 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:56,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 195 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:29:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 19:29:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-12-02 19:29:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 153 states have (on average 1.477124183006536) internal successors, (226), 193 states have internal predecessors, (226), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 236 transitions. [2023-12-02 19:29:56,094 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 236 transitions. Word has length 43 [2023-12-02 19:29:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:56,094 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 236 transitions. [2023-12-02 19:29:56,094 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 236 transitions. [2023-12-02 19:29:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 19:29:56,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:56,096 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:56,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 19:29:56,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 19:29:56,301 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:56,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash 649054583, now seen corresponding path program 1 times [2023-12-02 19:29:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:56,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268226222] [2023-12-02 19:29:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:56,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:56,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:56,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751662178] [2023-12-02 19:29:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:56,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:56,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:56,311 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:56,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 19:29:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:56,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:56,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:29:56,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:56,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268226222] [2023-12-02 19:29:56,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751662178] [2023-12-02 19:29:56,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751662178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:56,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:56,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:56,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860467706] [2023-12-02 19:29:56,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:56,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:29:56,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:56,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:29:56,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:29:56,400 INFO L87 Difference]: Start difference. First operand 201 states and 236 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:56,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:56,453 INFO L93 Difference]: Finished difference Result 243 states and 250 transitions. [2023-12-02 19:29:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:29:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-12-02 19:29:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:56,455 INFO L225 Difference]: With dead ends: 243 [2023-12-02 19:29:56,455 INFO L226 Difference]: Without dead ends: 242 [2023-12-02 19:29:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:56,456 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 63 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:56,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 373 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:29:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-02 19:29:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 209. [2023-12-02 19:29:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 161 states have (on average 1.4596273291925466) internal successors, (235), 201 states have internal predecessors, (235), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2023-12-02 19:29:56,467 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 44 [2023-12-02 19:29:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:56,467 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2023-12-02 19:29:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:56,467 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2023-12-02 19:29:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 19:29:56,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:56,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:56,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 19:29:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 19:29:56,671 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash 693670232, now seen corresponding path program 1 times [2023-12-02 19:29:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255325425] [2023-12-02 19:29:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:56,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:56,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72605462] [2023-12-02 19:29:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:56,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:56,680 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:56,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 19:29:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:56,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:29:56,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:29:56,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:56,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255325425] [2023-12-02 19:29:56,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72605462] [2023-12-02 19:29:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72605462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:56,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:56,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:29:56,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634849002] [2023-12-02 19:29:56,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:56,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:29:56,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:29:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:29:56,922 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:57,135 INFO L93 Difference]: Finished difference Result 209 states and 245 transitions. [2023-12-02 19:29:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:29:57,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-12-02 19:29:57,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:57,137 INFO L225 Difference]: With dead ends: 209 [2023-12-02 19:29:57,138 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 19:29:57,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:29:57,139 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 177 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:57,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 215 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:29:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 19:29:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-02 19:29:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 161 states have (on average 1.434782608695652) internal successors, (231), 199 states have internal predecessors, (231), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:29:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 241 transitions. [2023-12-02 19:29:57,151 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 241 transitions. Word has length 45 [2023-12-02 19:29:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 241 transitions. [2023-12-02 19:29:57,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:29:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 241 transitions. [2023-12-02 19:29:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 19:29:57,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:57,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:57,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 19:29:57,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 19:29:57,353 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:29:57,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash 28940768, now seen corresponding path program 1 times [2023-12-02 19:29:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:57,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788828927] [2023-12-02 19:29:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:57,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:29:57,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651727618] [2023-12-02 19:29:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:57,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:57,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:57,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 19:29:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:57,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:29:57,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:29:57,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:29:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:29:57,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788828927] [2023-12-02 19:29:57,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:29:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651727618] [2023-12-02 19:29:57,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651727618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:29:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078425514] [2023-12-02 19:29:57,808 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 19:29:57,809 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:29:57,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:29:57,809 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:29:57,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:30:01,956 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2023-12-02 19:30:02,009 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:30:02,036 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:30:04,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2078425514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:30:04,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:30:04,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7, 7] total 29 [2023-12-02 19:30:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902641348] [2023-12-02 19:30:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:30:04,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 19:30:04,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:30:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 19:30:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2023-12-02 19:30:04,709 INFO L87 Difference]: Start difference. First operand 207 states and 241 transitions. Second operand has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:30:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:30:06,550 INFO L93 Difference]: Finished difference Result 238 states and 244 transitions. [2023-12-02 19:30:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 19:30:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2023-12-02 19:30:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:30:06,552 INFO L225 Difference]: With dead ends: 238 [2023-12-02 19:30:06,552 INFO L226 Difference]: Without dead ends: 187 [2023-12-02 19:30:06,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 86 SyntacticMatches, 22 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=297, Invalid=1109, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 19:30:06,554 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 521 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:30:06,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 175 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:30:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-02 19:30:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 180. [2023-12-02 19:30:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 134 states have (on average 1.3134328358208955) internal successors, (176), 172 states have internal predecessors, (176), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:30:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 186 transitions. [2023-12-02 19:30:06,566 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 186 transitions. Word has length 46 [2023-12-02 19:30:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:30:06,567 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 186 transitions. [2023-12-02 19:30:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:30:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 186 transitions. [2023-12-02 19:30:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 19:30:06,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:30:06,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:30:06,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 19:30:06,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:06,774 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:30:06,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:30:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1602318510, now seen corresponding path program 1 times [2023-12-02 19:30:06,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:30:06,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423275451] [2023-12-02 19:30:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:06,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:30:06,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:30:06,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094571316] [2023-12-02 19:30:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:30:06,784 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:30:06,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 19:30:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:30:06,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:30:06,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:30:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:30:07,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:30:07,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:30:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423275451] [2023-12-02 19:30:07,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:30:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094571316] [2023-12-02 19:30:07,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094571316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:30:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [884520053] [2023-12-02 19:30:07,351 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:30:07,351 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:30:07,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:30:07,352 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:30:07,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:30:10,610 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:30:10,649 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:30:10,673 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:30:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [884520053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:30:14,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:30:14,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [8] total 29 [2023-12-02 19:30:14,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616085319] [2023-12-02 19:30:14,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:30:14,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 19:30:14,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:30:14,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 19:30:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 19:30:14,184 INFO L87 Difference]: Start difference. First operand 180 states and 186 transitions. Second operand has 23 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:30:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:30:18,279 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2023-12-02 19:30:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:30:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-12-02 19:30:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:30:18,281 INFO L225 Difference]: With dead ends: 289 [2023-12-02 19:30:18,281 INFO L226 Difference]: Without dead ends: 263 [2023-12-02 19:30:18,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 61 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=631, Invalid=2125, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 19:30:18,283 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 884 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:30:18,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 142 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 19:30:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-02 19:30:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 234. [2023-12-02 19:30:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 187 states have (on average 1.2941176470588236) internal successors, (242), 225 states have internal predecessors, (242), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:30:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2023-12-02 19:30:18,297 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 50 [2023-12-02 19:30:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:30:18,297 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2023-12-02 19:30:18,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:30:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2023-12-02 19:30:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:30:18,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:30:18,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:30:18,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 19:30:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:18,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:30:18,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:30:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2065169296, now seen corresponding path program 1 times [2023-12-02 19:30:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:30:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483771648] [2023-12-02 19:30:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:30:18,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:30:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147309974] [2023-12-02 19:30:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:18,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:30:18,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:30:18,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 19:30:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:30:18,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 19:30:18,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:30:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:30:18,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:30:18,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:30:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483771648] [2023-12-02 19:30:18,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:30:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147309974] [2023-12-02 19:30:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147309974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:30:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [104164008] [2023-12-02 19:30:18,941 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:30:18,941 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:30:18,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:30:18,941 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:30:18,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:30:21,983 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:30:22,029 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:30:22,053 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:30:25,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10625#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 10)) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 6) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:30:25,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:30:25,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:30:25,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 19:30:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525437192] [2023-12-02 19:30:25,619 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:30:25,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:30:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:30:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:30:25,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 19:30:25,621 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:30:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:30:25,847 INFO L93 Difference]: Finished difference Result 395 states and 432 transitions. [2023-12-02 19:30:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:30:25,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-12-02 19:30:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:30:25,850 INFO L225 Difference]: With dead ends: 395 [2023-12-02 19:30:25,850 INFO L226 Difference]: Without dead ends: 393 [2023-12-02 19:30:25,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 68 SyntacticMatches, 22 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 19:30:25,851 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 356 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:30:25,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 275 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:30:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-02 19:30:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 331. [2023-12-02 19:30:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 282 states have (on average 1.3475177304964538) internal successors, (380), 320 states have internal predecessors, (380), 8 states have call successors, (8), 2 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 19:30:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 396 transitions. [2023-12-02 19:30:25,873 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 396 transitions. Word has length 52 [2023-12-02 19:30:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:30:25,874 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 396 transitions. [2023-12-02 19:30:25,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:30:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 396 transitions. [2023-12-02 19:30:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 19:30:25,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:30:25,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:30:25,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 19:30:26,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 19:30:26,076 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:30:26,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:30:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 260928500, now seen corresponding path program 1 times [2023-12-02 19:30:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:30:26,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350774793] [2023-12-02 19:30:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:30:26,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:30:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726728817] [2023-12-02 19:30:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:26,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:26,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:30:26,083 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:30:26,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 19:30:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:30:26,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 19:30:26,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:30:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:30:26,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:30:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:30:27,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:30:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350774793] [2023-12-02 19:30:27,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:30:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726728817] [2023-12-02 19:30:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726728817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:30:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1475616439] [2023-12-02 19:30:27,377 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:30:27,378 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:30:27,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:30:27,378 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:30:27,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:30:30,428 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:30:30,465 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:30:30,489 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:30:34,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11751#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 10)) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 6) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:30:34,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:30:34,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:30:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 19:30:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412271829] [2023-12-02 19:30:34,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:30:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:30:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:30:34,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:30:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 19:30:34,033 INFO L87 Difference]: Start difference. First operand 331 states and 396 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 19:30:37,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 19:30:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:30:46,368 INFO L93 Difference]: Finished difference Result 551 states and 604 transitions. [2023-12-02 19:30:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 19:30:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 56 [2023-12-02 19:30:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:30:46,371 INFO L225 Difference]: With dead ends: 551 [2023-12-02 19:30:46,371 INFO L226 Difference]: Without dead ends: 549 [2023-12-02 19:30:46,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 25 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=312, Invalid=1758, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 19:30:46,373 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 852 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:30:46,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 369 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-12-02 19:30:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-12-02 19:30:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 404. [2023-12-02 19:30:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 353 states have (on average 1.348441926345609) internal successors, (476), 391 states have internal predecessors, (476), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 19:30:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 496 transitions. [2023-12-02 19:30:46,393 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 496 transitions. Word has length 56 [2023-12-02 19:30:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:30:46,393 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 496 transitions. [2023-12-02 19:30:46,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 19:30:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 496 transitions. [2023-12-02 19:30:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 19:30:46,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:30:46,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:30:46,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 19:30:46,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 19:30:46,595 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:30:46,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:30:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash -569792684, now seen corresponding path program 1 times [2023-12-02 19:30:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:30:46,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197670027] [2023-12-02 19:30:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:46,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:30:46,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:30:46,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063505100] [2023-12-02 19:30:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:46,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:46,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:30:46,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:30:46,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 19:30:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:30:46,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 19:30:46,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:30:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:30:46,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:30:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:30:46,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:30:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197670027] [2023-12-02 19:30:46,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:30:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063505100] [2023-12-02 19:30:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063505100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:30:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626702530] [2023-12-02 19:30:46,982 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:30:46,982 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:30:46,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:30:46,982 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:30:46,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:30:49,998 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:30:50,037 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:30:50,061 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:30:53,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13155#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 10)) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 6))' at error location [2023-12-02 19:30:53,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:30:53,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:30:53,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 19:30:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165753125] [2023-12-02 19:30:53,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:30:53,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:30:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:30:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:30:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 19:30:53,996 INFO L87 Difference]: Start difference. First operand 404 states and 496 transitions. Second operand has 14 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:30:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:30:55,440 INFO L93 Difference]: Finished difference Result 569 states and 665 transitions. [2023-12-02 19:30:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 19:30:55,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2023-12-02 19:30:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:30:55,445 INFO L225 Difference]: With dead ends: 569 [2023-12-02 19:30:55,445 INFO L226 Difference]: Without dead ends: 567 [2023-12-02 19:30:55,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 115 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=275, Invalid=2377, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 19:30:55,447 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 481 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:30:55,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 344 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 19:30:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-12-02 19:30:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 451. [2023-12-02 19:30:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 399 states have (on average 1.3659147869674186) internal successors, (545), 437 states have internal predecessors, (545), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:30:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 567 transitions. [2023-12-02 19:30:55,471 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 567 transitions. Word has length 59 [2023-12-02 19:30:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:30:55,472 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 567 transitions. [2023-12-02 19:30:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:30:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 567 transitions. [2023-12-02 19:30:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 19:30:55,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:30:55,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:30:55,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 19:30:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:55,673 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:30:55,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:30:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2053313318, now seen corresponding path program 1 times [2023-12-02 19:30:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:30:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789396136] [2023-12-02 19:30:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:30:55,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:30:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438716027] [2023-12-02 19:30:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:55,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:30:55,681 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:30:55,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 19:30:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:30:55,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:30:55,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:30:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:30:56,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:30:56,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:30:56,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789396136] [2023-12-02 19:30:56,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:30:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438716027] [2023-12-02 19:30:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438716027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:30:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1314797900] [2023-12-02 19:30:56,886 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:30:56,886 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:30:56,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:30:56,887 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:30:56,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:30:59,984 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:31:00,032 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:31:00,059 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:31:05,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14582#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775808)) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 |ULTIMATE.start_main_~xy~0#1|) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 6) (<= |ULTIMATE.start_main_~yx~0#1| 30))' at error location [2023-12-02 19:31:05,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:31:05,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:31:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 19:31:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187925694] [2023-12-02 19:31:05,964 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:31:05,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:31:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:31:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 19:31:05,966 INFO L87 Difference]: Start difference. First operand 451 states and 567 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:31:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:07,283 INFO L93 Difference]: Finished difference Result 464 states and 573 transitions. [2023-12-02 19:31:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:31:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2023-12-02 19:31:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:07,286 INFO L225 Difference]: With dead ends: 464 [2023-12-02 19:31:07,286 INFO L226 Difference]: Without dead ends: 462 [2023-12-02 19:31:07,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 92 SyntacticMatches, 31 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=211, Invalid=1769, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 19:31:07,288 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 110 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:07,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 329 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:31:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-02 19:31:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 451. [2023-12-02 19:31:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 399 states have (on average 1.3609022556390977) internal successors, (543), 437 states have internal predecessors, (543), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:31:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 565 transitions. [2023-12-02 19:31:07,308 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 565 transitions. Word has length 65 [2023-12-02 19:31:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:07,308 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 565 transitions. [2023-12-02 19:31:07,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:31:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 565 transitions. [2023-12-02 19:31:07,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 19:31:07,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:07,309 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, 1, 1, 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 19:31:07,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 19:31:07,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:07,510 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:31:07,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -650754692, now seen corresponding path program 1 times [2023-12-02 19:31:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177857407] [2023-12-02 19:31:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:07,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:07,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:07,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313566477] [2023-12-02 19:31:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:07,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:07,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:07,517 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:07,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 19:31:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:07,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:31:07,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:07,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:07,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177857407] [2023-12-02 19:31:07,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313566477] [2023-12-02 19:31:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313566477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:31:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [663211853] [2023-12-02 19:31:07,829 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 19:31:07,830 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:31:07,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:31:07,830 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:31:07,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:10,881 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:31:10,923 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:31:10,947 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:31:16,250 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16011#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= 0 |ULTIMATE.start_main_~xy~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |ULTIMATE.start_main_~X~0#1|))' at error location [2023-12-02 19:31:16,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:31:16,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:31:16,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 19:31:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119500869] [2023-12-02 19:31:16,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:31:16,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:31:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:16,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:31:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 19:31:16,252 INFO L87 Difference]: Start difference. First operand 451 states and 565 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:31:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:17,238 INFO L93 Difference]: Finished difference Result 587 states and 691 transitions. [2023-12-02 19:31:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 19:31:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 72 [2023-12-02 19:31:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:17,241 INFO L225 Difference]: With dead ends: 587 [2023-12-02 19:31:17,241 INFO L226 Difference]: Without dead ends: 584 [2023-12-02 19:31:17,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 33 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 19:31:17,243 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 222 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:17,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 875 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 19:31:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-02 19:31:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 451. [2023-12-02 19:31:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 399 states have (on average 1.3483709273182958) internal successors, (538), 437 states have internal predecessors, (538), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:31:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 560 transitions. [2023-12-02 19:31:17,267 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 560 transitions. Word has length 72 [2023-12-02 19:31:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:17,267 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 560 transitions. [2023-12-02 19:31:17,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:31:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 560 transitions. [2023-12-02 19:31:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 19:31:17,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:17,268 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, 1, 1, 1, 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 19:31:17,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 19:31:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:17,469 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:31:17,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash 871430889, now seen corresponding path program 1 times [2023-12-02 19:31:17,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:17,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874643966] [2023-12-02 19:31:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:17,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644243939] [2023-12-02 19:31:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:17,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:17,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:17,477 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:17,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 19:31:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:17,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:31:17,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:17,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:17,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:17,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874643966] [2023-12-02 19:31:17,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:17,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644243939] [2023-12-02 19:31:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644243939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:31:17,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853771355] [2023-12-02 19:31:17,920 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:31:17,921 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:31:17,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:31:17,921 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:31:17,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:20,976 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:31:21,015 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:31:21,039 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:31:25,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1853771355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:25,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:31:25,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [5, 5] total 32 [2023-12-02 19:31:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493952776] [2023-12-02 19:31:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:25,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 19:31:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 19:31:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:31:25,035 INFO L87 Difference]: Start difference. First operand 451 states and 560 transitions. Second operand has 25 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:31:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:29,135 INFO L93 Difference]: Finished difference Result 481 states and 580 transitions. [2023-12-02 19:31:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:31:29,136 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2023-12-02 19:31:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:29,138 INFO L225 Difference]: With dead ends: 481 [2023-12-02 19:31:29,138 INFO L226 Difference]: Without dead ends: 480 [2023-12-02 19:31:29,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 157 SyntacticMatches, 35 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=634, Invalid=1916, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 19:31:29,139 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 512 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:29,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 174 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 19:31:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-02 19:31:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 453. [2023-12-02 19:31:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 401 states have (on average 1.344139650872818) internal successors, (539), 439 states have internal predecessors, (539), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:31:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 561 transitions. [2023-12-02 19:31:29,171 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 561 transitions. Word has length 75 [2023-12-02 19:31:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:29,171 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 561 transitions. [2023-12-02 19:31:29,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:31:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 561 transitions. [2023-12-02 19:31:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 19:31:29,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:29,172 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:29,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 19:31:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 19:31:29,373 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:31:29,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 507401813, now seen corresponding path program 1 times [2023-12-02 19:31:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:29,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508664308] [2023-12-02 19:31:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:29,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43389824] [2023-12-02 19:31:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:29,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:29,383 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:29,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 19:31:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:29,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 19:31:29,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:29,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:30,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:30,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508664308] [2023-12-02 19:31:30,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:30,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43389824] [2023-12-02 19:31:30,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43389824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:31:30,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [695623421] [2023-12-02 19:31:30,004 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:31:30,004 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:31:30,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:31:30,005 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:31:30,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:33,013 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:31:33,052 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:31:33,076 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:31:38,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19095#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= (+ 9223372036854775808 (* 2 |ULTIMATE.start_main_~X~0#1|)) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 |ULTIMATE.start_main_~xy~0#1|))' at error location [2023-12-02 19:31:38,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:31:38,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:31:38,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 19:31:38,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264888693] [2023-12-02 19:31:38,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:31:38,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:31:38,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:31:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1087, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 19:31:38,400 INFO L87 Difference]: Start difference. First operand 453 states and 561 transitions. Second operand has 14 states, 13 states have (on average 10.076923076923077) internal successors, (131), 14 states have internal predecessors, (131), 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 19:31:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:39,483 INFO L93 Difference]: Finished difference Result 565 states and 656 transitions. [2023-12-02 19:31:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:31:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.076923076923077) internal successors, (131), 14 states have internal predecessors, (131), 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 77 [2023-12-02 19:31:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:39,486 INFO L225 Difference]: With dead ends: 565 [2023-12-02 19:31:39,486 INFO L226 Difference]: Without dead ends: 564 [2023-12-02 19:31:39,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 158 SyntacticMatches, 37 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 19:31:39,487 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 543 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:39,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 432 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:31:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-02 19:31:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 466. [2023-12-02 19:31:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 414 states have (on average 1.3357487922705313) internal successors, (553), 452 states have internal predecessors, (553), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:31:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 575 transitions. [2023-12-02 19:31:39,510 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 575 transitions. Word has length 77 [2023-12-02 19:31:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:39,510 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 575 transitions. [2023-12-02 19:31:39,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.076923076923077) internal successors, (131), 14 states have internal predecessors, (131), 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 19:31:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 575 transitions. [2023-12-02 19:31:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 19:31:39,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:39,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:39,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 19:31:39,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 19:31:39,712 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:31:39,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1420632762, now seen corresponding path program 1 times [2023-12-02 19:31:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569992330] [2023-12-02 19:31:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:39,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:39,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147631979] [2023-12-02 19:31:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:39,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:39,720 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:39,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 19:31:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:39,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:31:39,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:39,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:39,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569992330] [2023-12-02 19:31:39,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147631979] [2023-12-02 19:31:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147631979] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:31:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1468040047] [2023-12-02 19:31:39,915 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:31:39,915 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:31:39,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:31:39,915 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:31:39,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:44,781 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:31:44,818 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:31:44,842 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:31:50,889 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20684#(and (<= 9223372036854775807 |ULTIMATE.start_main_#t~post7#1|) (= |ULTIMATE.start_main_#t~post7#1| |ULTIMATE.start_main_~x~0#1|) (or (and (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|))) (and (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775805) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))) (or (and (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= (* 2 |ULTIMATE.start_main_~Y~0#1|) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~X~0#1| (+ |ULTIMATE.start_main_~Y~0#1| 4611686018427387904)))))' at error location [2023-12-02 19:31:50,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:31:50,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:31:50,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 19:31:50,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414781472] [2023-12-02 19:31:50,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:31:50,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:31:50,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:31:50,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=2503, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 19:31:50,892 INFO L87 Difference]: Start difference. First operand 466 states and 575 transitions. Second operand has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:31:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:51,167 INFO L93 Difference]: Finished difference Result 920 states and 1092 transitions. [2023-12-02 19:31:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:31:51,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 78 [2023-12-02 19:31:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:51,173 INFO L225 Difference]: With dead ends: 920 [2023-12-02 19:31:51,173 INFO L226 Difference]: Without dead ends: 919 [2023-12-02 19:31:51,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=287, Invalid=2905, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 19:31:51,175 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 268 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:51,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 681 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:31:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-12-02 19:31:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 728. [2023-12-02 19:31:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 669 states have (on average 1.312406576980568) internal successors, (878), 707 states have internal predecessors, (878), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:31:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 914 transitions. [2023-12-02 19:31:51,229 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 914 transitions. Word has length 78 [2023-12-02 19:31:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:51,230 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 914 transitions. [2023-12-02 19:31:51,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:31:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 914 transitions. [2023-12-02 19:31:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 19:31:51,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:51,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:51,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 19:31:51,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 19:31:51,432 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:31:51,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash 967283778, now seen corresponding path program 1 times [2023-12-02 19:31:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:51,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513534281] [2023-12-02 19:31:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:51,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:51,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:51,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709165367] [2023-12-02 19:31:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:51,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:51,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:51,440 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:51,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 19:31:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:51,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:31:51,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:51,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:51,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:51,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513534281] [2023-12-02 19:31:51,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:51,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709165367] [2023-12-02 19:31:51,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709165367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:31:51,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699964072] [2023-12-02 19:31:51,767 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2023-12-02 19:31:51,767 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:31:51,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:31:51,767 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:31:51,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:54,807 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2023-12-02 19:31:54,817 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:31:54,842 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:32:02,435 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22931#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:32:02,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:32:02,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:32:02,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 19:32:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44809792] [2023-12-02 19:32:02,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:32:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:32:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:32:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:32:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 19:32:02,438 INFO L87 Difference]: Start difference. First operand 728 states and 914 transitions. Second operand has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:32:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:32:03,955 INFO L93 Difference]: Finished difference Result 795 states and 960 transitions. [2023-12-02 19:32:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 19:32:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 78 [2023-12-02 19:32:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:32:03,959 INFO L225 Difference]: With dead ends: 795 [2023-12-02 19:32:03,959 INFO L226 Difference]: Without dead ends: 794 [2023-12-02 19:32:03,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 160 SyntacticMatches, 34 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=312, Invalid=2658, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 19:32:03,960 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 584 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:32:03,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 585 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:32:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-02 19:32:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 728. [2023-12-02 19:32:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 669 states have (on average 1.3079222720478325) internal successors, (875), 707 states have internal predecessors, (875), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:32:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 911 transitions. [2023-12-02 19:32:03,997 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 911 transitions. Word has length 78 [2023-12-02 19:32:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:32:03,997 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 911 transitions. [2023-12-02 19:32:03,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:32:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 911 transitions. [2023-12-02 19:32:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 19:32:03,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:32:03,999 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:32:04,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-02 19:32:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 19:32:04,199 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:32:04,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:32:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash -537070340, now seen corresponding path program 1 times [2023-12-02 19:32:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:32:04,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579163013] [2023-12-02 19:32:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:04,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:32:04,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:32:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359318612] [2023-12-02 19:32:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:04,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:04,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:32:04,208 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:32:04,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 19:32:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:32:04,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 19:32:04,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:32:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:32:04,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:32:04,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:32:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579163013] [2023-12-02 19:32:04,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:32:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359318612] [2023-12-02 19:32:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359318612] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:32:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1417742247] [2023-12-02 19:32:04,893 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:32:04,893 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:32:04,893 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:32:04,893 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:32:04,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:32:09,851 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:32:09,896 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:32:09,920 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:32:17,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24889#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:32:17,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:32:17,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:32:17,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 19:32:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994849170] [2023-12-02 19:32:17,598 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:32:17,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:32:17,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:32:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:32:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3140, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:32:17,601 INFO L87 Difference]: Start difference. First operand 728 states and 911 transitions. Second operand has 12 states, 10 states have (on average 7.2) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:32:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:32:18,406 INFO L93 Difference]: Finished difference Result 797 states and 964 transitions. [2023-12-02 19:32:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 19:32:18,406 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.2) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 81 [2023-12-02 19:32:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:32:18,409 INFO L225 Difference]: With dead ends: 797 [2023-12-02 19:32:18,410 INFO L226 Difference]: Without dead ends: 795 [2023-12-02 19:32:18,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=359, Invalid=4197, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 19:32:18,411 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 282 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:32:18,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 599 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:32:18,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-02 19:32:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 732. [2023-12-02 19:32:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 673 states have (on average 1.3075780089153046) internal successors, (880), 711 states have internal predecessors, (880), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:32:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 916 transitions. [2023-12-02 19:32:18,462 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 916 transitions. Word has length 81 [2023-12-02 19:32:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:32:18,462 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 916 transitions. [2023-12-02 19:32:18,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.2) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:32:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 916 transitions. [2023-12-02 19:32:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 19:32:18,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:32:18,463 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:32:18,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 19:32:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:18,664 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:32:18,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:32:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1474315424, now seen corresponding path program 2 times [2023-12-02 19:32:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:32:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726658957] [2023-12-02 19:32:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:32:18,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:32:18,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701141627] [2023-12-02 19:32:18,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:32:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:32:18,673 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:32:18,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 19:32:18,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:32:18,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:32:18,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:32:18,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:32:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 19:32:19,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:32:19,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:32:19,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726658957] [2023-12-02 19:32:19,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:32:19,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701141627] [2023-12-02 19:32:19,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701141627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:32:19,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332446552] [2023-12-02 19:32:19,238 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:32:19,239 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:32:19,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:32:19,239 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:32:19,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:32:24,009 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:32:24,045 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:32:24,070 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:32:30,763 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26842#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:32:30,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:32:30,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:32:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 19:32:30,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419048735] [2023-12-02 19:32:30,764 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:32:30,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:32:30,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:32:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:32:30,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2704, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 19:32:30,766 INFO L87 Difference]: Start difference. First operand 732 states and 916 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:32:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:32:31,053 INFO L93 Difference]: Finished difference Result 732 states and 916 transitions. [2023-12-02 19:32:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:32:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 81 [2023-12-02 19:32:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:32:31,057 INFO L225 Difference]: With dead ends: 732 [2023-12-02 19:32:31,057 INFO L226 Difference]: Without dead ends: 729 [2023-12-02 19:32:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=297, Invalid=3009, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 19:32:31,059 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 168 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:32:31,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 150 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:32:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-12-02 19:32:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 463. [2023-12-02 19:32:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 414 states have (on average 1.3043478260869565) internal successors, (540), 449 states have internal predecessors, (540), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:32:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 562 transitions. [2023-12-02 19:32:31,081 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 562 transitions. Word has length 81 [2023-12-02 19:32:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:32:31,081 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 562 transitions. [2023-12-02 19:32:31,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:32:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 562 transitions. [2023-12-02 19:32:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 19:32:31,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:32:31,082 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:32:31,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 19:32:31,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:31,282 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:32:31,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:32:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 530688702, now seen corresponding path program 1 times [2023-12-02 19:32:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:32:31,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866751864] [2023-12-02 19:32:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:32:31,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:32:31,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149695396] [2023-12-02 19:32:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:31,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:31,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:32:31,290 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:32:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 19:32:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:32:31,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:32:31,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:32:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:32:31,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:32:31,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:32:31,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866751864] [2023-12-02 19:32:31,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:32:31,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149695396] [2023-12-02 19:32:31,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149695396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:32:31,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1367473991] [2023-12-02 19:32:31,976 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:32:31,976 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:32:31,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:32:31,977 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:32:31,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:32:36,808 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:32:36,845 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:32:36,870 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:32:46,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28455#(and (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:32:46,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:32:46,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:32:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 19:32:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362235250] [2023-12-02 19:32:46,369 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:32:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:32:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:32:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:32:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 19:32:46,372 INFO L87 Difference]: Start difference. First operand 463 states and 562 transitions. Second operand has 10 states, 8 states have (on average 9.125) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:32:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:32:46,963 INFO L93 Difference]: Finished difference Result 685 states and 839 transitions. [2023-12-02 19:32:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:32:46,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.125) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 82 [2023-12-02 19:32:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:32:46,967 INFO L225 Difference]: With dead ends: 685 [2023-12-02 19:32:46,967 INFO L226 Difference]: Without dead ends: 684 [2023-12-02 19:32:46,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=326, Invalid=3334, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 19:32:46,969 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 220 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:32:46,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 550 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:32:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-02 19:32:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 603. [2023-12-02 19:32:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 550 states have (on average 1.3272727272727274) internal successors, (730), 585 states have internal predecessors, (730), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:32:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 760 transitions. [2023-12-02 19:32:46,998 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 760 transitions. Word has length 82 [2023-12-02 19:32:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:32:46,998 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 760 transitions. [2023-12-02 19:32:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.125) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:32:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 760 transitions. [2023-12-02 19:32:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 19:32:46,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:32:46,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:32:47,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 19:32:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:47,199 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:32:47,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:32:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1540862054, now seen corresponding path program 2 times [2023-12-02 19:32:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:32:47,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543776239] [2023-12-02 19:32:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:32:47,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:32:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587336721] [2023-12-02 19:32:47,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:32:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:32:47,207 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:32:47,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 19:32:47,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:32:47,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:32:47,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:32:47,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:32:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 19:32:47,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:32:47,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:32:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543776239] [2023-12-02 19:32:47,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:32:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587336721] [2023-12-02 19:32:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587336721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:32:47,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:32:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:32:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789508781] [2023-12-02 19:32:47,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:32:47,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:32:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:32:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:32:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:32:47,298 INFO L87 Difference]: Start difference. First operand 603 states and 760 transitions. Second operand has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:32:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:32:47,435 INFO L93 Difference]: Finished difference Result 646 states and 805 transitions. [2023-12-02 19:32:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:32:47,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2023-12-02 19:32:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:32:47,438 INFO L225 Difference]: With dead ends: 646 [2023-12-02 19:32:47,438 INFO L226 Difference]: Without dead ends: 645 [2023-12-02 19:32:47,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 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 19:32:47,439 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 65 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:32:47,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:32:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-02 19:32:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 624. [2023-12-02 19:32:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 606 states have internal predecessors, (750), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:32:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 780 transitions. [2023-12-02 19:32:47,470 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 780 transitions. Word has length 82 [2023-12-02 19:32:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:32:47,470 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 780 transitions. [2023-12-02 19:32:47,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:32:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 780 transitions. [2023-12-02 19:32:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 19:32:47,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:32:47,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 19:32:47,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 19:32:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:47,672 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:32:47,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:32:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1109263680, now seen corresponding path program 1 times [2023-12-02 19:32:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:32:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128888356] [2023-12-02 19:32:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:32:47,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:32:47,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651999516] [2023-12-02 19:32:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:47,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:32:47,681 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:32:47,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 19:32:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:32:47,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 19:32:47,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:32:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:32:48,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:32:48,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:32:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128888356] [2023-12-02 19:32:48,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:32:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651999516] [2023-12-02 19:32:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651999516] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:32:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [510407694] [2023-12-02 19:32:48,239 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:32:48,240 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:32:48,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:32:48,240 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:32:48,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:32:52,867 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:32:52,904 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:32:52,932 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:33:03,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31764#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:33:03,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:33:03,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:33:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 19:33:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980820962] [2023-12-02 19:33:03,668 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:33:03,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:33:03,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:33:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:33:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:33:03,670 INFO L87 Difference]: Start difference. First operand 624 states and 780 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 11 states have internal predecessors, (74), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:33:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:33:06,613 INFO L93 Difference]: Finished difference Result 1044 states and 1348 transitions. [2023-12-02 19:33:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 19:33:06,613 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 11 states have internal predecessors, (74), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 84 [2023-12-02 19:33:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:33:06,617 INFO L225 Difference]: With dead ends: 1044 [2023-12-02 19:33:06,618 INFO L226 Difference]: Without dead ends: 1042 [2023-12-02 19:33:06,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=412, Invalid=4280, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 19:33:06,619 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 469 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:33:06,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 646 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:33:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-12-02 19:33:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 751. [2023-12-02 19:33:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 695 states have (on average 1.3338129496402877) internal successors, (927), 730 states have internal predecessors, (927), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:33:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 963 transitions. [2023-12-02 19:33:06,661 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 963 transitions. Word has length 84 [2023-12-02 19:33:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:33:06,661 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 963 transitions. [2023-12-02 19:33:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 11 states have internal predecessors, (74), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:33:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 963 transitions. [2023-12-02 19:33:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 19:33:06,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:33:06,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 19:33:06,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 19:33:06,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:33:06,863 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:33:06,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:33:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 995285148, now seen corresponding path program 2 times [2023-12-02 19:33:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:33:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200760079] [2023-12-02 19:33:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:33:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:33:06,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:33:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122439016] [2023-12-02 19:33:06,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:33:06,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:33:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:33:06,872 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:33:06,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 19:33:06,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:33:06,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:33:06,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:33:06,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:33:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:33:07,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:33:07,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:33:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200760079] [2023-12-02 19:33:07,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:33:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122439016] [2023-12-02 19:33:07,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122439016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:33:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [529582509] [2023-12-02 19:33:07,443 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:33:07,443 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:33:07,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:33:07,443 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:33:07,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:33:12,307 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:33:12,344 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:33:12,369 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:33:22,801 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34023#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:33:22,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:33:22,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:33:22,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 19:33:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432432966] [2023-12-02 19:33:22,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:33:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:33:22,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:33:22,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:33:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 19:33:22,803 INFO L87 Difference]: Start difference. First operand 751 states and 963 transitions. Second operand has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 9 states have internal predecessors, (73), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:33:23,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:33:23,739 INFO L93 Difference]: Finished difference Result 751 states and 963 transitions. [2023-12-02 19:33:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:33:23,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 9 states have internal predecessors, (73), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 84 [2023-12-02 19:33:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:33:23,744 INFO L225 Difference]: With dead ends: 751 [2023-12-02 19:33:23,744 INFO L226 Difference]: Without dead ends: 749 [2023-12-02 19:33:23,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:33:23,745 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 335 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:33:23,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 87 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:33:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-02 19:33:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 622. [2023-12-02 19:33:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 571 states have (on average 1.295971978984238) internal successors, (740), 604 states have internal predecessors, (740), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:33:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 770 transitions. [2023-12-02 19:33:23,784 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 770 transitions. Word has length 84 [2023-12-02 19:33:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:33:23,784 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 770 transitions. [2023-12-02 19:33:23,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 9 states have internal predecessors, (73), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:33:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 770 transitions. [2023-12-02 19:33:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 19:33:23,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:33:23,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:33:23,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-02 19:33:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:33:23,986 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:33:23,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:33:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash -27435648, now seen corresponding path program 1 times [2023-12-02 19:33:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:33:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996363322] [2023-12-02 19:33:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:33:23,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:33:23,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:33:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792493290] [2023-12-02 19:33:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:33:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:33:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:33:23,994 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:33:23,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 19:33:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:33:24,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 19:33:24,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:33:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:33:24,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:33:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:33:26,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:33:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996363322] [2023-12-02 19:33:26,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:33:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792493290] [2023-12-02 19:33:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792493290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:33:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [628026339] [2023-12-02 19:33:26,047 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:33:26,048 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:33:26,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:33:26,048 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:33:26,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:33:30,923 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:33:30,960 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:33:30,984 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:33:39,095 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36041#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 4611686018427387904 |ULTIMATE.start_main_~yx~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:33:39,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:33:39,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:33:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-02 19:33:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320830] [2023-12-02 19:33:39,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:33:39,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 19:33:39,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:33:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 19:33:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 19:33:39,097 INFO L87 Difference]: Start difference. First operand 622 states and 770 transitions. Second operand has 18 states, 17 states have (on average 8.705882352941176) internal successors, (148), 18 states have internal predecessors, (148), 6 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 19:34:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:06,360 INFO L93 Difference]: Finished difference Result 1294 states and 1591 transitions. [2023-12-02 19:34:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 19:34:06,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.705882352941176) internal successors, (148), 18 states have internal predecessors, (148), 6 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 85 [2023-12-02 19:34:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:06,367 INFO L225 Difference]: With dead ends: 1294 [2023-12-02 19:34:06,367 INFO L226 Difference]: Without dead ends: 1292 [2023-12-02 19:34:06,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=652, Invalid=6154, Unknown=0, NotChecked=0, Total=6806 [2023-12-02 19:34:06,368 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 928 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:06,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 436 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2023-12-02 19:34:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-12-02 19:34:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 983. [2023-12-02 19:34:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 921 states have (on average 1.3192182410423452) internal successors, (1215), 954 states have internal predecessors, (1215), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 19:34:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1267 transitions. [2023-12-02 19:34:06,437 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1267 transitions. Word has length 85 [2023-12-02 19:34:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:06,437 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1267 transitions. [2023-12-02 19:34:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.705882352941176) internal successors, (148), 18 states have internal predecessors, (148), 6 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 19:34:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1267 transitions. [2023-12-02 19:34:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 19:34:06,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:06,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:06,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-02 19:34:06,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 19:34:06,639 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:34:06,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash 789068580, now seen corresponding path program 2 times [2023-12-02 19:34:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:34:06,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608149510] [2023-12-02 19:34:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:34:06,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:34:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721655031] [2023-12-02 19:34:06,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:34:06,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:06,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:06,647 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:06,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 19:34:06,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:34:06,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:34:06,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 19:34:06,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 19:34:07,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:07,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:34:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608149510] [2023-12-02 19:34:07,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:34:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721655031] [2023-12-02 19:34:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721655031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:34:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1801200366] [2023-12-02 19:34:07,319 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:34:07,319 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:34:07,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:34:07,319 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:34:07,319 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:34:12,448 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:34:12,484 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:34:12,509 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:34:20,071 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38836#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 4611686018427387904 |ULTIMATE.start_main_~yx~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:34:20,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:34:20,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:34:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 19:34:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495823845] [2023-12-02 19:34:20,072 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:34:20,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:34:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:34:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:34:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 19:34:20,073 INFO L87 Difference]: Start difference. First operand 983 states and 1267 transitions. Second operand has 9 states, 7 states have (on average 8.0) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:34:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:20,498 INFO L93 Difference]: Finished difference Result 983 states and 1267 transitions. [2023-12-02 19:34:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:34:20,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 85 [2023-12-02 19:34:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:20,502 INFO L225 Difference]: With dead ends: 983 [2023-12-02 19:34:20,502 INFO L226 Difference]: Without dead ends: 981 [2023-12-02 19:34:20,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=327, Invalid=3333, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 19:34:20,504 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 293 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:20,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 91 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:34:20,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2023-12-02 19:34:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 620. [2023-12-02 19:34:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 571 states have (on average 1.2784588441330997) internal successors, (730), 602 states have internal predecessors, (730), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:34:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 760 transitions. [2023-12-02 19:34:20,560 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 760 transitions. Word has length 85 [2023-12-02 19:34:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:20,561 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 760 transitions. [2023-12-02 19:34:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:34:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 760 transitions. [2023-12-02 19:34:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 19:34:20,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:20,562 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:34:20,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 19:34:20,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 19:34:20,762 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:34:20,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash -850505022, now seen corresponding path program 1 times [2023-12-02 19:34:20,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:34:20,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209067504] [2023-12-02 19:34:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:20,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:34:20,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:34:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626118328] [2023-12-02 19:34:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:20,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:20,771 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:20,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 19:34:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:20,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:34:20,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:34:21,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:21,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:34:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209067504] [2023-12-02 19:34:21,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:34:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626118328] [2023-12-02 19:34:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626118328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:34:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [424827641] [2023-12-02 19:34:21,649 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:34:21,649 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:34:21,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:34:21,649 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:34:21,649 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:34:26,830 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:34:26,867 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:34:26,892 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:34:36,141 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40916#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387905) 0) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:34:36,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:34:36,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:34:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 19:34:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624216409] [2023-12-02 19:34:36,142 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:34:36,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:34:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:34:36,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:34:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3117, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:34:36,143 INFO L87 Difference]: Start difference. First operand 620 states and 760 transitions. Second operand has 11 states, 9 states have (on average 8.555555555555555) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:34:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:37,993 INFO L93 Difference]: Finished difference Result 705 states and 840 transitions. [2023-12-02 19:34:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 19:34:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.555555555555555) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 86 [2023-12-02 19:34:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:37,996 INFO L225 Difference]: With dead ends: 705 [2023-12-02 19:34:37,996 INFO L226 Difference]: Without dead ends: 704 [2023-12-02 19:34:37,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=367, Invalid=3793, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 19:34:37,997 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 246 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:37,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 564 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:34:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-02 19:34:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 620. [2023-12-02 19:34:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 571 states have (on average 1.2732049036777584) internal successors, (727), 602 states have internal predecessors, (727), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:34:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 757 transitions. [2023-12-02 19:34:38,044 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 757 transitions. Word has length 86 [2023-12-02 19:34:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:38,044 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 757 transitions. [2023-12-02 19:34:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.555555555555555) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:34:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 757 transitions. [2023-12-02 19:34:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 19:34:38,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:38,045 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:34:38,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 19:34:38,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-02 19:34:38,245 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:34:38,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1308677730, now seen corresponding path program 2 times [2023-12-02 19:34:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:34:38,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536483756] [2023-12-02 19:34:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:34:38,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:34:38,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854636232] [2023-12-02 19:34:38,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:34:38,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:38,253 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:38,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 19:34:38,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:34:38,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:34:38,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:34:38,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 19:34:38,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 19:34:38,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:34:38,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536483756] [2023-12-02 19:34:38,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:34:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854636232] [2023-12-02 19:34:38,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854636232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [552198875] [2023-12-02 19:34:38,453 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:34:38,453 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:34:38,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:34:38,453 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:34:38,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:34:43,699 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:34:43,737 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:34:43,761 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:34:50,562 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42880#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387905) 0) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:34:50,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:34:50,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:34:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-02 19:34:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851555472] [2023-12-02 19:34:50,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:34:50,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:34:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:34:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:34:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 19:34:50,564 INFO L87 Difference]: Start difference. First operand 620 states and 757 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:34:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:51,082 INFO L93 Difference]: Finished difference Result 667 states and 807 transitions. [2023-12-02 19:34:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:34:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2023-12-02 19:34:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:51,085 INFO L225 Difference]: With dead ends: 667 [2023-12-02 19:34:51,085 INFO L226 Difference]: Without dead ends: 666 [2023-12-02 19:34:51,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=312, Invalid=2444, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 19:34:51,086 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 262 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:51,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 89 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:34:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-02 19:34:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 632. [2023-12-02 19:34:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 583 states have (on average 1.267581475128645) internal successors, (739), 614 states have internal predecessors, (739), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 19:34:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 769 transitions. [2023-12-02 19:34:51,139 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 769 transitions. Word has length 86 [2023-12-02 19:34:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:51,140 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 769 transitions. [2023-12-02 19:34:51,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:34:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 769 transitions. [2023-12-02 19:34:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 19:34:51,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:51,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 19:34:51,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 19:34:51,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 19:34:51,341 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:34:51,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:51,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1291537724, now seen corresponding path program 1 times [2023-12-02 19:34:51,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:34:51,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574724758] [2023-12-02 19:34:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:51,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:34:51,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:34:51,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95541850] [2023-12-02 19:34:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:51,348 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:51,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 19:34:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:51,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 19:34:51,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:34:51,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:52,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:34:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574724758] [2023-12-02 19:34:52,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:34:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95541850] [2023-12-02 19:34:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95541850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:34:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1675511009] [2023-12-02 19:34:52,259 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:34:52,259 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:34:52,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:34:52,260 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:34:52,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:34:57,041 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:34:57,078 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:34:57,102 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:35:08,654 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '44651#(and (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:35:08,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:35:08,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:35:08,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 19:35:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815653236] [2023-12-02 19:35:08,655 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:35:08,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:35:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:35:08,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:35:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 19:35:08,656 INFO L87 Difference]: Start difference. First operand 632 states and 769 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:35:11,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:35:11,760 INFO L93 Difference]: Finished difference Result 1040 states and 1300 transitions. [2023-12-02 19:35:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 19:35:11,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2023-12-02 19:35:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:35:11,766 INFO L225 Difference]: With dead ends: 1040 [2023-12-02 19:35:11,766 INFO L226 Difference]: Without dead ends: 1038 [2023-12-02 19:35:11,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 19:35:11,768 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 332 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:35:11,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 744 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 19:35:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-12-02 19:35:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 775. [2023-12-02 19:35:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 723 states have (on average 1.2863070539419088) internal successors, (930), 754 states have internal predecessors, (930), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:35:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 966 transitions. [2023-12-02 19:35:11,846 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 966 transitions. Word has length 88 [2023-12-02 19:35:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:35:11,846 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 966 transitions. [2023-12-02 19:35:11,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:35:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 966 transitions. [2023-12-02 19:35:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 19:35:11,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:35:11,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 19:35:11,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 19:35:12,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:35:12,048 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:35:12,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:35:12,048 INFO L85 PathProgramCache]: Analyzing trace with hash 786121376, now seen corresponding path program 2 times [2023-12-02 19:35:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:35:12,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285499093] [2023-12-02 19:35:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:35:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:35:12,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:35:12,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459130321] [2023-12-02 19:35:12,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:35:12,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:35:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:35:12,057 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:35:12,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 19:35:12,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:35:12,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:35:12,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 19:35:12,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:35:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:35:28,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:35:44,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:35:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285499093] [2023-12-02 19:35:44,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:35:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459130321] [2023-12-02 19:35:44,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459130321] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:35:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058267592] [2023-12-02 19:35:44,340 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:35:44,340 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:35:44,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:35:44,340 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:35:44,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:35:49,436 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:35:49,472 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:35:49,497 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:37:07,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '47071#(and (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:37:07,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:37:07,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:37:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 19:37:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577861527] [2023-12-02 19:37:07,764 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:37:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:37:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:37:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:37:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=3723, Unknown=9, NotChecked=0, Total=4032 [2023-12-02 19:37:07,766 INFO L87 Difference]: Start difference. First operand 775 states and 966 transitions. Second operand has 12 states, 10 states have (on average 7.7) internal successors, (77), 12 states have internal predecessors, (77), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:37:09,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:11,821 WARN L539 Checker$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 19:37:13,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:15,873 WARN L539 Checker$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 19:37:17,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:19,915 WARN L539 Checker$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 19:37:22,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:24,163 WARN L539 Checker$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 19:37:26,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:28,191 WARN L539 Checker$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 19:37:32,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:40,921 WARN L539 Checker$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 19:37:42,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:50,534 WARN L539 Checker$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 19:37:53,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:55,199 WARN L539 Checker$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 19:37:57,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:37:59,228 WARN L539 Checker$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 19:38:01,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:03,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:07,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:09,363 WARN L539 Checker$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 19:38:11,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:13,464 WARN L539 Checker$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 19:38:15,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:18,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:20,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:22,103 WARN L539 Checker$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 19:38:24,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:28,455 WARN L539 Checker$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 19:38:30,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:32,491 WARN L539 Checker$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 19:38:34,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:36,518 WARN L539 Checker$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 19:38:38,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:40,544 WARN L539 Checker$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 19:38:42,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:44,639 WARN L539 Checker$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 19:38:46,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:51,340 WARN L539 Checker$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 19:38:54,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:38:56,858 WARN L539 Checker$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 19:38:58,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:00,877 WARN L539 Checker$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 19:39:02,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:04,899 WARN L539 Checker$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 19:39:07,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:09,262 WARN L539 Checker$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 19:39:11,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:13,314 WARN L539 Checker$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 19:39:15,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:17,916 WARN L539 Checker$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 19:39:19,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:22,444 WARN L539 Checker$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 19:39:24,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:28,623 WARN L539 Checker$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 19:39:30,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:34,276 WARN L539 Checker$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 19:39:36,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:38,328 WARN L539 Checker$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 19:39:40,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:43,901 WARN L539 Checker$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 19:39:45,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:47,930 WARN L539 Checker$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 19:39:54,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:39:56,030 WARN L539 Checker$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 19:39:58,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:00,059 WARN L539 Checker$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 19:40:02,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:04,160 WARN L539 Checker$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 19:40:06,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:08,179 WARN L539 Checker$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 19:40:11,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:12,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:14,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:16,730 WARN L539 Checker$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 19:40:18,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:22,564 WARN L539 Checker$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 19:40:23,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:25,867 WARN L539 Checker$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 19:40:28,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:40:30,143 WARN L539 Checker$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 19:40:32,226 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 19:40:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:32,263 INFO L93 Difference]: Finished difference Result 1151 states and 1458 transitions. [2023-12-02 19:40:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 19:40:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.7) internal successors, (77), 12 states have internal predecessors, (77), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2023-12-02 19:40:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:32,267 INFO L225 Difference]: With dead ends: 1151 [2023-12-02 19:40:32,267 INFO L226 Difference]: Without dead ends: 1150 [2023-12-02 19:40:32,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 135.9s TimeCoverageRelationStatistics Valid=493, Invalid=5193, Unknown=14, NotChecked=0, Total=5700 [2023-12-02 19:40:32,268 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 422 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 11 mSolverCounterUnsat, 82 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 82 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:32,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 128 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 869 Invalid, 82 Unknown, 0 Unchecked, 178.1s Time] [2023-12-02 19:40:32,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-02 19:40:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 779. [2023-12-02 19:40:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 727 states have (on average 1.2833562585969738) internal successors, (933), 758 states have internal predecessors, (933), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:40:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 969 transitions. [2023-12-02 19:40:32,330 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 969 transitions. Word has length 88 [2023-12-02 19:40:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:32,330 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 969 transitions. [2023-12-02 19:40:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.7) internal successors, (77), 12 states have internal predecessors, (77), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:40:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 969 transitions. [2023-12-02 19:40:32,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 19:40:32,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:32,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:32,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 19:40:32,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:32,531 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:40:32,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1382963708, now seen corresponding path program 1 times [2023-12-02 19:40:32,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:32,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488498121] [2023-12-02 19:40:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:32,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:32,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:40:32,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360583857] [2023-12-02 19:40:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:32,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:32,539 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:32,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 19:40:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:32,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 19:40:32,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:40:33,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:40:33,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488498121] [2023-12-02 19:40:33,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:40:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360583857] [2023-12-02 19:40:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360583857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:40:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1567257654] [2023-12-02 19:40:33,669 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:40:33,669 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:40:33,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:40:33,670 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:40:33,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:40:38,297 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:40:38,339 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:40:38,363 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:40:50,688 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '49529#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) |ULTIMATE.start_main_~yx~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:40:50,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:40:50,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:40:50,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 19:40:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279854961] [2023-12-02 19:40:50,689 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:40:50,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:40:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:50,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:40:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=3141, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:40:50,690 INFO L87 Difference]: Start difference. First operand 779 states and 969 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:40:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:53,052 INFO L93 Difference]: Finished difference Result 861 states and 1047 transitions. [2023-12-02 19:40:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 19:40:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 89 [2023-12-02 19:40:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:53,058 INFO L225 Difference]: With dead ends: 861 [2023-12-02 19:40:53,058 INFO L226 Difference]: Without dead ends: 859 [2023-12-02 19:40:53,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=348, Invalid=3812, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 19:40:53,059 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 259 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:53,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 508 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:40:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-02 19:40:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 779. [2023-12-02 19:40:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 727 states have (on average 1.2751031636863823) internal successors, (927), 758 states have internal predecessors, (927), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:40:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 963 transitions. [2023-12-02 19:40:53,128 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 963 transitions. Word has length 89 [2023-12-02 19:40:53,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:53,128 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 963 transitions. [2023-12-02 19:40:53,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:40:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 963 transitions. [2023-12-02 19:40:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 19:40:53,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:53,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:53,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 19:40:53,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:53,330 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:40:53,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1400041048, now seen corresponding path program 2 times [2023-12-02 19:40:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086893774] [2023-12-02 19:40:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:53,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:40:53,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460278819] [2023-12-02 19:40:53,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:40:53,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:53,339 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:53,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 19:40:53,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:40:53,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:40:53,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 19:40:53,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:40:55,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:40:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:40:59,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086893774] [2023-12-02 19:40:59,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:40:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460278819] [2023-12-02 19:40:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460278819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:40:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [304157913] [2023-12-02 19:40:59,019 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:40:59,019 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:40:59,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:40:59,019 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:40:59,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:41:04,026 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:41:04,063 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:41:04,087 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:41:19,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51861#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) |ULTIMATE.start_main_~yx~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:41:19,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:41:19,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:41:19,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2023-12-02 19:41:19,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044970752] [2023-12-02 19:41:19,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:41:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 19:41:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 19:41:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=4337, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 19:41:19,614 INFO L87 Difference]: Start difference. First operand 779 states and 963 transitions. Second operand has 26 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 26 states have internal predecessors, (153), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 19:41:56,508 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 19:42:11,748 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 19:42:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:17,698 INFO L93 Difference]: Finished difference Result 1148 states and 1443 transitions. [2023-12-02 19:42:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-02 19:42:17,699 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 26 states have internal predecessors, (153), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 89 [2023-12-02 19:42:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:17,703 INFO L225 Difference]: With dead ends: 1148 [2023-12-02 19:42:17,703 INFO L226 Difference]: Without dead ends: 1142 [2023-12-02 19:42:17,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5185 ImplicationChecksByTransitivity, 68.1s TimeCoverageRelationStatistics Valid=1611, Invalid=12424, Unknown=7, NotChecked=0, Total=14042 [2023-12-02 19:42:17,705 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1143 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 108 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:17,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 205 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1541 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 19:42:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2023-12-02 19:42:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 938. [2023-12-02 19:42:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 881 states have (on average 1.2622020431328036) internal successors, (1112), 909 states have internal predecessors, (1112), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 19:42:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1164 transitions. [2023-12-02 19:42:17,796 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1164 transitions. Word has length 89 [2023-12-02 19:42:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:17,796 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 1164 transitions. [2023-12-02 19:42:17,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 26 states have internal predecessors, (153), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 19:42:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1164 transitions. [2023-12-02 19:42:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 19:42:17,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:17,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 19:42:17,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 19:42:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-02 19:42:17,997 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:42:17,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash 77798086, now seen corresponding path program 1 times [2023-12-02 19:42:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:17,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475747882] [2023-12-02 19:42:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:18,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:42:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862480365] [2023-12-02 19:42:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:18,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:42:18,008 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:42:18,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 19:42:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:18,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 19:42:18,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:42:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:42:18,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:42:19,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475747882] [2023-12-02 19:42:19,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:42:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862480365] [2023-12-02 19:42:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862480365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:42:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489754513] [2023-12-02 19:42:19,118 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:42:19,118 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:42:19,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:42:19,119 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:42:19,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:42:23,809 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:42:23,847 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:42:23,871 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:42:31,011 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '54577#(and (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:42:31,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:42:31,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:42:31,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 19:42:31,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702576782] [2023-12-02 19:42:31,011 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:42:31,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:42:31,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:31,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:42:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=3602, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 19:42:31,013 INFO L87 Difference]: Start difference. First operand 938 states and 1164 transitions. Second operand has 14 states, 12 states have (on average 6.75) internal successors, (81), 14 states have internal predecessors, (81), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:42:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:33,370 INFO L93 Difference]: Finished difference Result 1128 states and 1378 transitions. [2023-12-02 19:42:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 19:42:33,370 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.75) internal successors, (81), 14 states have internal predecessors, (81), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 90 [2023-12-02 19:42:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:33,376 INFO L225 Difference]: With dead ends: 1128 [2023-12-02 19:42:33,376 INFO L226 Difference]: Without dead ends: 1121 [2023-12-02 19:42:33,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=443, Invalid=4813, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 19:42:33,377 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 592 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:33,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 493 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 19:42:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-02 19:42:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1062. [2023-12-02 19:42:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1003 states have (on average 1.2512462612163509) internal successors, (1255), 1031 states have internal predecessors, (1255), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:42:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1311 transitions. [2023-12-02 19:42:33,479 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1311 transitions. Word has length 90 [2023-12-02 19:42:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:33,479 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1311 transitions. [2023-12-02 19:42:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.75) internal successors, (81), 14 states have internal predecessors, (81), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:42:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1311 transitions. [2023-12-02 19:42:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 19:42:33,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:33,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:33,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 19:42:33,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-02 19:42:33,681 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:42:33,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1414116368, now seen corresponding path program 1 times [2023-12-02 19:42:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874938334] [2023-12-02 19:42:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:33,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:42:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284939051] [2023-12-02 19:42:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:42:33,689 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:42:33,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 19:42:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:33,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 19:42:33,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:42:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:42:34,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:42:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:42:35,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:35,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874938334] [2023-12-02 19:42:35,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:42:35,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284939051] [2023-12-02 19:42:35,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284939051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:42:35,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891603465] [2023-12-02 19:42:35,317 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 19:42:35,318 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:42:35,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:42:35,318 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:42:35,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:42:38,472 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2023-12-02 19:42:38,483 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:42:38,509 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:42:48,733 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '57511#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775808)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 19:42:48,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:42:48,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:42:48,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-02 19:42:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620222082] [2023-12-02 19:42:48,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:42:48,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 19:42:48,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:42:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 19:42:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=2552, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 19:42:48,735 INFO L87 Difference]: Start difference. First operand 1062 states and 1311 transitions. Second operand has 23 states, 22 states have (on average 7.136363636363637) internal successors, (157), 23 states have internal predecessors, (157), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:42:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:42:58,199 INFO L93 Difference]: Finished difference Result 1099 states and 1339 transitions. [2023-12-02 19:42:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-02 19:42:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.136363636363637) internal successors, (157), 23 states have internal predecessors, (157), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 92 [2023-12-02 19:42:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:42:58,204 INFO L225 Difference]: With dead ends: 1099 [2023-12-02 19:42:58,204 INFO L226 Difference]: Without dead ends: 1074 [2023-12-02 19:42:58,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 179 SyntacticMatches, 43 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3058 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=597, Invalid=4953, Unknown=0, NotChecked=0, Total=5550 [2023-12-02 19:42:58,205 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 424 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:42:58,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 525 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-02 19:42:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-12-02 19:42:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1055. [2023-12-02 19:42:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 996 states have (on average 1.2540160642570282) internal successors, (1249), 1024 states have internal predecessors, (1249), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:42:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1305 transitions. [2023-12-02 19:42:58,305 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1305 transitions. Word has length 92 [2023-12-02 19:42:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:58,305 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1305 transitions. [2023-12-02 19:42:58,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.136363636363637) internal successors, (157), 23 states have internal predecessors, (157), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:42:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1305 transitions. [2023-12-02 19:42:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 19:42:58,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:58,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 19:42:58,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 19:42:58,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-02 19:42:58,507 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:42:58,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1222262182, now seen corresponding path program 1 times [2023-12-02 19:42:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:58,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337629537] [2023-12-02 19:42:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:42:58,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:42:58,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827427731] [2023-12-02 19:42:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:58,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:42:58,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:42:58,517 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:42:58,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 19:42:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:42:58,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:42:58,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:42:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 19:42:58,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:42:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 19:42:58,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:42:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337629537] [2023-12-02 19:42:58,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:42:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827427731] [2023-12-02 19:42:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827427731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:42:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276562673] [2023-12-02 19:42:58,865 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:42:58,865 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:42:58,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:42:58,865 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:42:58,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:03,682 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:43:03,720 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:43:03,744 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:09,928 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60415#(and (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 4611686018427387904)) (<= (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:43:09,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:09,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:43:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-02 19:43:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889429226] [2023-12-02 19:43:09,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:43:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:43:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2200, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 19:43:09,929 INFO L87 Difference]: Start difference. First operand 1055 states and 1305 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 19:43:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:10,316 INFO L93 Difference]: Finished difference Result 1106 states and 1343 transitions. [2023-12-02 19:43:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:43:10,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 94 [2023-12-02 19:43:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:10,320 INFO L225 Difference]: With dead ends: 1106 [2023-12-02 19:43:10,320 INFO L226 Difference]: Without dead ends: 1104 [2023-12-02 19:43:10,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 229 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=288, Invalid=2682, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 19:43:10,321 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 268 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:10,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 163 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:43:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2023-12-02 19:43:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1057. [2023-12-02 19:43:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 998 states have (on average 1.250501002004008) internal successors, (1248), 1026 states have internal predecessors, (1248), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:43:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1304 transitions. [2023-12-02 19:43:10,423 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1304 transitions. Word has length 94 [2023-12-02 19:43:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:10,423 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1304 transitions. [2023-12-02 19:43:10,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 19:43:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1304 transitions. [2023-12-02 19:43:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 19:43:10,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:10,425 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:10,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-02 19:43:10,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-02 19:43:10,625 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:43:10,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 493901514, now seen corresponding path program 1 times [2023-12-02 19:43:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964022413] [2023-12-02 19:43:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:10,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657979594] [2023-12-02 19:43:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:10,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:10,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:10,634 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:10,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 19:43:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:10,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:10,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 19:43:10,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 19:43:10,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964022413] [2023-12-02 19:43:10,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657979594] [2023-12-02 19:43:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657979594] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:43:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101469052] [2023-12-02 19:43:10,964 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:43:10,964 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:10,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:10,964 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:10,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:15,722 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:43:15,762 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:43:15,790 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:23,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '63315#(and (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= (* 2 |ULTIMATE.start_main_~yx~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:43:23,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:23,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:43:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 19:43:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154251579] [2023-12-02 19:43:23,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:23,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:43:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:43:23,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2294, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 19:43:23,069 INFO L87 Difference]: Start difference. First operand 1057 states and 1304 transitions. Second operand has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 8 states have internal predecessors, (137), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:43:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:23,577 INFO L93 Difference]: Finished difference Result 1104 states and 1335 transitions. [2023-12-02 19:43:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:43:23,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 8 states have internal predecessors, (137), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 95 [2023-12-02 19:43:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:23,581 INFO L225 Difference]: With dead ends: 1104 [2023-12-02 19:43:23,581 INFO L226 Difference]: Without dead ends: 1102 [2023-12-02 19:43:23,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=297, Invalid=2783, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 19:43:23,582 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 150 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:23,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 304 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:43:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-12-02 19:43:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1069. [2023-12-02 19:43:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1010 states have (on average 1.2386138613861386) internal successors, (1251), 1038 states have internal predecessors, (1251), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:43:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1307 transitions. [2023-12-02 19:43:23,687 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1307 transitions. Word has length 95 [2023-12-02 19:43:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:23,687 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1307 transitions. [2023-12-02 19:43:23,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 8 states have internal predecessors, (137), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:43:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1307 transitions. [2023-12-02 19:43:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 19:43:23,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:23,688 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:43:23,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-02 19:43:23,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-02 19:43:23,889 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:43:23,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2067887784, now seen corresponding path program 1 times [2023-12-02 19:43:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341863813] [2023-12-02 19:43:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:23,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570113427] [2023-12-02 19:43:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:23,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:23,899 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:23,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-02 19:43:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:23,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:23,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 19:43:24,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:24,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:24,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341863813] [2023-12-02 19:43:24,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:24,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570113427] [2023-12-02 19:43:24,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570113427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:43:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108007474] [2023-12-02 19:43:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:24,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:43:24,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:43:24,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:43:24,014 INFO L87 Difference]: Start difference. First operand 1069 states and 1307 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:24,370 INFO L93 Difference]: Finished difference Result 1244 states and 1501 transitions. [2023-12-02 19:43:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:43:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 96 [2023-12-02 19:43:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:24,376 INFO L225 Difference]: With dead ends: 1244 [2023-12-02 19:43:24,376 INFO L226 Difference]: Without dead ends: 1242 [2023-12-02 19:43:24,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:43:24,377 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 60 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:24,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 312 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:43:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2023-12-02 19:43:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1117. [2023-12-02 19:43:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1058 states have (on average 1.2391304347826086) internal successors, (1311), 1086 states have internal predecessors, (1311), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:43:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1367 transitions. [2023-12-02 19:43:24,497 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1367 transitions. Word has length 96 [2023-12-02 19:43:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:24,497 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1367 transitions. [2023-12-02 19:43:24,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1367 transitions. [2023-12-02 19:43:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 19:43:24,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:24,498 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:43:24,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-02 19:43:24,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-02 19:43:24,699 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:43:24,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2102012148, now seen corresponding path program 1 times [2023-12-02 19:43:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298083552] [2023-12-02 19:43:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:24,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:24,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:24,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128160899] [2023-12-02 19:43:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:24,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:24,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:24,709 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:24,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-02 19:43:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:24,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:43:24,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:43:26,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:27,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298083552] [2023-12-02 19:43:27,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128160899] [2023-12-02 19:43:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128160899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:43:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [724580786] [2023-12-02 19:43:27,821 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:43:27,821 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:27,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:27,821 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:27,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:33,058 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:43:33,096 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:43:33,121 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:43,157 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '68829#(and (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (* 2 |ULTIMATE.start_main_~yx~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:43:43,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:43,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:43:43,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 19:43:43,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555994751] [2023-12-02 19:43:43,157 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:43,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:43:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:43:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=3140, Unknown=1, NotChecked=0, Total=3422 [2023-12-02 19:43:43,158 INFO L87 Difference]: Start difference. First operand 1117 states and 1367 transitions. Second operand has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:43:45,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:45,211 INFO L93 Difference]: Finished difference Result 1139 states and 1380 transitions. [2023-12-02 19:43:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:43:45,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 97 [2023-12-02 19:43:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:45,216 INFO L225 Difference]: With dead ends: 1139 [2023-12-02 19:43:45,216 INFO L226 Difference]: Without dead ends: 1138 [2023-12-02 19:43:45,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=313, Invalid=3468, Unknown=1, NotChecked=0, Total=3782 [2023-12-02 19:43:45,217 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 117 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:45,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 397 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 19:43:45,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-12-02 19:43:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1117. [2023-12-02 19:43:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1058 states have (on average 1.2372400756143667) internal successors, (1309), 1086 states have internal predecessors, (1309), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:43:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1365 transitions. [2023-12-02 19:43:45,336 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1365 transitions. Word has length 97 [2023-12-02 19:43:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:45,336 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1365 transitions. [2023-12-02 19:43:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:43:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1365 transitions. [2023-12-02 19:43:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 19:43:45,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:45,337 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 19:43:45,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-02 19:43:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-02 19:43:45,538 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:43:45,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash -319988048, now seen corresponding path program 2 times [2023-12-02 19:43:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229788667] [2023-12-02 19:43:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:45,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:45,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66095857] [2023-12-02 19:43:45,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:43:45,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:45,546 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:45,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-02 19:43:45,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:43:45,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:43:45,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 19:43:45,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 45 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:46,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 45 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:46,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:46,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229788667] [2023-12-02 19:43:46,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:46,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66095857] [2023-12-02 19:43:46,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66095857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:43:46,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [185051432] [2023-12-02 19:43:46,461 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:43:46,461 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:46,461 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:46,461 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:46,461 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:51,501 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 113 for LOIs [2023-12-02 19:43:51,544 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:43:51,569 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:44:03,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '71839#(and (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (* 2 |ULTIMATE.start_main_~yx~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 19:44:03,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:44:03,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:44:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-02 19:44:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840686852] [2023-12-02 19:44:03,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:44:03,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 19:44:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 19:44:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3241, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 19:44:03,353 INFO L87 Difference]: Start difference. First operand 1117 states and 1365 transitions. Second operand has 17 states, 15 states have (on average 8.733333333333333) internal successors, (131), 17 states have internal predecessors, (131), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 19:44:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:07,442 INFO L93 Difference]: Finished difference Result 1161 states and 1401 transitions. [2023-12-02 19:44:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:44:07,443 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.733333333333333) internal successors, (131), 17 states have internal predecessors, (131), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 97 [2023-12-02 19:44:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:07,445 INFO L225 Difference]: With dead ends: 1161 [2023-12-02 19:44:07,445 INFO L226 Difference]: Without dead ends: 1160 [2023-12-02 19:44:07,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=402, Invalid=4290, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 19:44:07,446 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 620 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:07,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 141 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 19:44:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2023-12-02 19:44:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1117. [2023-12-02 19:44:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1058 states have (on average 1.2287334593572778) internal successors, (1300), 1086 states have internal predecessors, (1300), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 19:44:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1356 transitions. [2023-12-02 19:44:07,562 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1356 transitions. Word has length 97 [2023-12-02 19:44:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:07,562 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1356 transitions. [2023-12-02 19:44:07,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.733333333333333) internal successors, (131), 17 states have internal predecessors, (131), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 19:44:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1356 transitions. [2023-12-02 19:44:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 19:44:07,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:07,563 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:07,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-12-02 19:44:07,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-02 19:44:07,763 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 19:44:07,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1936902682, now seen corresponding path program 2 times [2023-12-02 19:44:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:07,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991927697] [2023-12-02 19:44:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:07,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:07,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:44:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483982257] [2023-12-02 19:44:07,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:44:07,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:44:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:44:07,773 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:44:07,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12eb2098-932a-4258-b99b-a1ba156f043d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-02 19:44:07,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:44:07,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:44:07,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 19:44:07,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:44:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:44:08,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:44:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:44:09,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991927697] [2023-12-02 19:44:09,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:44:09,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483982257] [2023-12-02 19:44:09,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483982257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:44:09,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1344848153] [2023-12-02 19:44:09,688 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 19:44:09,688 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:44:09,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:44:09,688 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:44:09,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:44:12,722 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 105 for LOIs [2023-12-02 19:44:12,760 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 19:44:12,784 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:44:23,304 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74908#(and (<= |ULTIMATE.start_main_~Y~0#1| 5) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775808)) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 |ULTIMATE.start_main_~xy~0#1|) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 6) (<= |ULTIMATE.start_main_~yx~0#1| 30))' at error location [2023-12-02 19:44:23,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:44:23,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:44:23,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-02 19:44:23,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915285595] [2023-12-02 19:44:23,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:44:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 19:44:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 19:44:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 19:44:23,305 INFO L87 Difference]: Start difference. First operand 1117 states and 1356 transitions. Second operand has 19 states, 17 states have (on average 8.058823529411764) internal successors, (137), 19 states have internal predecessors, (137), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)