./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 357c28cbcf8a6aaf949faeabbb5ae0b19b92db6bb2faeba12cd91e7c958ae977 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:05:04,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:05:04,453 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:05:04,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:05:04,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:05:04,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:05:04,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:05:04,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:05:04,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:05:04,486 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:05:04,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:05:04,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:05:04,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:05:04,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:05:04,490 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:05:04,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:05:04,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:05:04,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:05:04,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:05:04,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:05:04,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:05:04,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:05:04,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:05:04,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:05:04,496 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:05:04,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:05:04,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:05:04,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:05:04,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:05:04,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:05:04,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:05:04,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:05:04,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:05:04,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:04,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:05:04,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:05:04,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:05:04,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:05:04,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:05:04,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:05:04,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:05:04,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:05:04,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:05:04,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:05:04,507 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 357c28cbcf8a6aaf949faeabbb5ae0b19b92db6bb2faeba12cd91e7c958ae977 [2023-11-21 22:05:04,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:05:04,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:05:04,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:05:04,801 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:05:04,802 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:05:04,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c [2023-11-21 22:05:08,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:05:08,425 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:05:08,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c [2023-11-21 22:05:08,434 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/data/3149fb622/205ad201289c48449844cbd5c677f869/FLAGf4b71bcdc [2023-11-21 22:05:08,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/data/3149fb622/205ad201289c48449844cbd5c677f869 [2023-11-21 22:05:08,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:05:08,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:05:08,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:08,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:05:08,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:05:08,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31de7857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08, skipping insertion in model container [2023-11-21 22:05:08,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:05:08,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:08,673 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:05:08,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:08,709 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:05:08,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08 WrapperNode [2023-11-21 22:05:08,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:08,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:08,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:05:08,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:05:08,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,747 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-21 22:05:08,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:08,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:05:08,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:05:08,749 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:05:08,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,763 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,773 INFO L187 HeapSplitter]: Split 9 memory accesses to 2 slices as follows [2, 7] [2023-11-21 22:05:08,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:05:08,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:05:08,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:05:08,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:05:08,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (1/1) ... [2023-11-21 22:05:08,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:08,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:05:08,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:05:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:05:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:05:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:05:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:05:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:05:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:05:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:05:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:05:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:05:08,942 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:05:08,945 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:05:09,160 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:05:09,224 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:05:09,224 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:05:09,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:09 BoogieIcfgContainer [2023-11-21 22:05:09,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:05:09,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:05:09,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:05:09,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:05:09,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:05:08" (1/3) ... [2023-11-21 22:05:09,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea20d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:09, skipping insertion in model container [2023-11-21 22:05:09,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:08" (2/3) ... [2023-11-21 22:05:09,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea20d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:09, skipping insertion in model container [2023-11-21 22:05:09,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:09" (3/3) ... [2023-11-21 22:05:09,237 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound10.c [2023-11-21 22:05:09,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:05:09,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 22:05:09,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:05:09,305 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=PETRI_NET, 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;@6160c2af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:05:09,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 22:05:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 22:05:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:05:09,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:09,319 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:09,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:09,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1203328600, now seen corresponding path program 1 times [2023-11-21 22:05:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:09,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268192574] [2023-11-21 22:05:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:05:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:05:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:05:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:05:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:09,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268192574] [2023-11-21 22:05:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268192574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:09,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:09,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:05:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717809557] [2023-11-21 22:05:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:05:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:05:09,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:05:09,868 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:05:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:09,980 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2023-11-21 22:05:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:05:09,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-11-21 22:05:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:09,991 INFO L225 Difference]: With dead ends: 72 [2023-11-21 22:05:09,991 INFO L226 Difference]: Without dead ends: 38 [2023-11-21 22:05:09,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:10,003 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:10,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-21 22:05:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-21 22:05:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:05:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-11-21 22:05:10,047 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 16 [2023-11-21 22:05:10,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:10,049 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-11-21 22:05:10,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:05:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-11-21 22:05:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:05:10,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:10,051 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:05:10,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1195344561, now seen corresponding path program 1 times [2023-11-21 22:05:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:10,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828239191] [2023-11-21 22:05:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:10,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:10,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056235822] [2023-11-21 22:05:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:10,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:10,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:10,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:10,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:05:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:10,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:05:10,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:10,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:10,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:10,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828239191] [2023-11-21 22:05:10,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:10,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056235822] [2023-11-21 22:05:10,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056235822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:10,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:10,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335233021] [2023-11-21 22:05:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:05:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:10,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:05:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:10,237 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:05:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:10,310 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2023-11-21 22:05:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:05:10,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-11-21 22:05:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:10,312 INFO L225 Difference]: With dead ends: 44 [2023-11-21 22:05:10,313 INFO L226 Difference]: Without dead ends: 43 [2023-11-21 22:05:10,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:10,315 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:10,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 91 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:05:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-21 22:05:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-11-21 22:05:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.391304347826087) internal successors, (32), 27 states have internal predecessors, (32), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:05:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-11-21 22:05:10,328 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2023-11-21 22:05:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:10,329 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-11-21 22:05:10,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:05:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-11-21 22:05:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 22:05:10,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:10,331 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:10,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:10,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:10,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:10,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1599024339, now seen corresponding path program 1 times [2023-11-21 22:05:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995009361] [2023-11-21 22:05:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:10,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:10,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747259785] [2023-11-21 22:05:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:10,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:10,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:10,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:10,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:05:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:10,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:05:10,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:10,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:10,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995009361] [2023-11-21 22:05:10,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:10,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747259785] [2023-11-21 22:05:10,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747259785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:10,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:10,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:10,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997974724] [2023-11-21 22:05:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:10,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:05:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:05:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:10,734 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:05:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:10,875 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2023-11-21 22:05:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:05:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2023-11-21 22:05:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:10,880 INFO L225 Difference]: With dead ends: 45 [2023-11-21 22:05:10,880 INFO L226 Difference]: Without dead ends: 44 [2023-11-21 22:05:10,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:10,884 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:10,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 86 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-21 22:05:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-11-21 22:05:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:05:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-11-21 22:05:10,895 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 25 [2023-11-21 22:05:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:10,896 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-11-21 22:05:10,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:05:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-11-21 22:05:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 22:05:10,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:10,898 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:10,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:11,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:11,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:11,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1051872212, now seen corresponding path program 1 times [2023-11-21 22:05:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:11,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302054636] [2023-11-21 22:05:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:11,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:11,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817527752] [2023-11-21 22:05:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:11,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:11,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:05:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:11,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:05:11,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:11,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:11,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302054636] [2023-11-21 22:05:11,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817527752] [2023-11-21 22:05:11,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817527752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:11,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:11,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:05:11,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205616656] [2023-11-21 22:05:11,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:11,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:05:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:11,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:05:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:05:11,372 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:05:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:11,481 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2023-11-21 22:05:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:05:11,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2023-11-21 22:05:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:11,486 INFO L225 Difference]: With dead ends: 84 [2023-11-21 22:05:11,486 INFO L226 Difference]: Without dead ends: 52 [2023-11-21 22:05:11,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:05:11,491 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:11,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 113 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-21 22:05:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-21 22:05:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:05:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2023-11-21 22:05:11,520 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 28 [2023-11-21 22:05:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:11,521 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2023-11-21 22:05:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:05:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2023-11-21 22:05:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 22:05:11,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:11,523 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:11,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-21 22:05:11,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1822769980, now seen corresponding path program 1 times [2023-11-21 22:05:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744812721] [2023-11-21 22:05:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:11,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964211413] [2023-11-21 22:05:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:11,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:11,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:11,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:11,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:05:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:11,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:05:11,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:11,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744812721] [2023-11-21 22:05:11,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964211413] [2023-11-21 22:05:11,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964211413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:11,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:05:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028501812] [2023-11-21 22:05:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:11,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:05:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:05:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:11,906 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:05:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:12,080 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2023-11-21 22:05:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:05:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2023-11-21 22:05:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:12,082 INFO L225 Difference]: With dead ends: 52 [2023-11-21 22:05:12,082 INFO L226 Difference]: Without dead ends: 50 [2023-11-21 22:05:12,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:05:12,084 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:12,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 81 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-21 22:05:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-21 22:05:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:05:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-11-21 22:05:12,095 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 32 [2023-11-21 22:05:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:12,096 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-11-21 22:05:12,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:05:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-11-21 22:05:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 22:05:12,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:12,098 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:12,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:12,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:12,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:12,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -671294444, now seen corresponding path program 1 times [2023-11-21 22:05:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:12,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207440692] [2023-11-21 22:05:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:12,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:12,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617367956] [2023-11-21 22:05:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:12,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:12,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:12,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:05:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:12,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:05:12,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:12,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:05:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:12,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207440692] [2023-11-21 22:05:12,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:12,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617367956] [2023-11-21 22:05:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617367956] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:05:12,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:05:12,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-21 22:05:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179909113] [2023-11-21 22:05:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:12,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:05:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:05:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:05:12,599 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:05:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:12,802 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2023-11-21 22:05:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:05:12,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-11-21 22:05:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:12,804 INFO L225 Difference]: With dead ends: 63 [2023-11-21 22:05:12,804 INFO L226 Difference]: Without dead ends: 62 [2023-11-21 22:05:12,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:05:12,806 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:12,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 106 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-21 22:05:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-11-21 22:05:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.225) internal successors, (49), 42 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 22:05:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-11-21 22:05:12,819 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 33 [2023-11-21 22:05:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:12,819 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-11-21 22:05:12,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:05:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-11-21 22:05:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 22:05:12,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:12,821 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:12,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:13,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:13,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:13,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:13,043 INFO L85 PathProgramCache]: Analyzing trace with hash -671256708, now seen corresponding path program 1 times [2023-11-21 22:05:13,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:13,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151057568] [2023-11-21 22:05:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:13,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:13,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489555129] [2023-11-21 22:05:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:13,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:13,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:05:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:13,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:05:13,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:13,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:05:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151057568] [2023-11-21 22:05:13,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489555129] [2023-11-21 22:05:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489555129] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:13,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-21 22:05:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617351550] [2023-11-21 22:05:13,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:13,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:05:13,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:05:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:05:13,329 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:05:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:13,591 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2023-11-21 22:05:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:05:13,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 33 [2023-11-21 22:05:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:13,593 INFO L225 Difference]: With dead ends: 86 [2023-11-21 22:05:13,593 INFO L226 Difference]: Without dead ends: 85 [2023-11-21 22:05:13,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:05:13,595 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 98 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:13,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 116 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-21 22:05:13,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-11-21 22:05:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 57 states have internal predecessors, (68), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 22:05:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2023-11-21 22:05:13,622 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 33 [2023-11-21 22:05:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:13,623 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2023-11-21 22:05:13,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:05:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2023-11-21 22:05:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:05:13,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:13,630 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:13,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-21 22:05:13,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:13,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:13,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1754090747, now seen corresponding path program 1 times [2023-11-21 22:05:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:13,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132384761] [2023-11-21 22:05:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:13,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:13,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015604576] [2023-11-21 22:05:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:13,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:13,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:13,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:05:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:13,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:05:13,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:14,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:05:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132384761] [2023-11-21 22:05:14,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015604576] [2023-11-21 22:05:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015604576] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:05:14,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:05:14,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-21 22:05:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379865877] [2023-11-21 22:05:14,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:14,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:05:14,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:05:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:05:14,149 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:05:14,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:14,305 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2023-11-21 22:05:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:05:14,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-11-21 22:05:14,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:14,309 INFO L225 Difference]: With dead ends: 145 [2023-11-21 22:05:14,309 INFO L226 Difference]: Without dead ends: 88 [2023-11-21 22:05:14,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:05:14,312 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:14,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 132 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-21 22:05:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2023-11-21 22:05:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 63 states have internal predecessors, (75), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-21 22:05:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2023-11-21 22:05:14,345 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 37 [2023-11-21 22:05:14,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:14,345 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2023-11-21 22:05:14,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:05:14,346 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2023-11-21 22:05:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:05:14,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:14,348 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-21 22:05:14,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:14,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:14,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1264454355, now seen corresponding path program 1 times [2023-11-21 22:05:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251094206] [2023-11-21 22:05:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:14,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:14,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171501747] [2023-11-21 22:05:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:14,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:14,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:14,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:14,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:05:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:14,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:05:14,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:14,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:05:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251094206] [2023-11-21 22:05:14,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171501747] [2023-11-21 22:05:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171501747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:14,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-21 22:05:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280508919] [2023-11-21 22:05:14,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:14,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:05:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:05:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:05:14,857 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-21 22:05:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:15,046 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2023-11-21 22:05:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 22:05:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 37 [2023-11-21 22:05:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:15,049 INFO L225 Difference]: With dead ends: 170 [2023-11-21 22:05:15,049 INFO L226 Difference]: Without dead ends: 113 [2023-11-21 22:05:15,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-21 22:05:15,051 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 51 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:15,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 138 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-21 22:05:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2023-11-21 22:05:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 79 states have internal predecessors, (93), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-21 22:05:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2023-11-21 22:05:15,066 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 37 [2023-11-21 22:05:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:15,067 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2023-11-21 22:05:15,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-21 22:05:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2023-11-21 22:05:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 22:05:15,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:15,068 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:15,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:15,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:15,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash 406296643, now seen corresponding path program 1 times [2023-11-21 22:05:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115004903] [2023-11-21 22:05:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:15,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295504929] [2023-11-21 22:05:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:15,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:15,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:15,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:15,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:05:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:15,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:05:15,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:05:15,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115004903] [2023-11-21 22:05:15,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295504929] [2023-11-21 22:05:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295504929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173035623] [2023-11-21 22:05:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:15,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:05:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:05:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:05:15,519 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-21 22:05:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:15,585 INFO L93 Difference]: Finished difference Result 191 states and 228 transitions. [2023-11-21 22:05:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:05:15,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2023-11-21 22:05:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:15,588 INFO L225 Difference]: With dead ends: 191 [2023-11-21 22:05:15,588 INFO L226 Difference]: Without dead ends: 134 [2023-11-21 22:05:15,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:05:15,590 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:15,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:05:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-21 22:05:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 123. [2023-11-21 22:05:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 94 states have internal predecessors, (111), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 22:05:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2023-11-21 22:05:15,617 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 41 [2023-11-21 22:05:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:15,618 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2023-11-21 22:05:15,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-21 22:05:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2023-11-21 22:05:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 22:05:15,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:15,620 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:15,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:15,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:15,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:15,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash 406397931, now seen corresponding path program 1 times [2023-11-21 22:05:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:15,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699254282] [2023-11-21 22:05:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:15,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:15,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:15,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107041084] [2023-11-21 22:05:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:15,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:15,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:15,863 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:15,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:05:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:15,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:05:15,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:15,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:05:16,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699254282] [2023-11-21 22:05:16,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107041084] [2023-11-21 22:05:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107041084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:16,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-21 22:05:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605143534] [2023-11-21 22:05:16,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:16,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:05:16,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:05:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:05:16,133 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-21 22:05:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:16,538 INFO L93 Difference]: Finished difference Result 163 states and 194 transitions. [2023-11-21 22:05:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-21 22:05:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 41 [2023-11-21 22:05:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:16,540 INFO L225 Difference]: With dead ends: 163 [2023-11-21 22:05:16,540 INFO L226 Difference]: Without dead ends: 162 [2023-11-21 22:05:16,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:05:16,542 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 95 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:16,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 182 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-21 22:05:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2023-11-21 22:05:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 112 states have internal predecessors, (135), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:05:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2023-11-21 22:05:16,566 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 41 [2023-11-21 22:05:16,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:16,566 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2023-11-21 22:05:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-21 22:05:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2023-11-21 22:05:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:05:16,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:16,568 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:16,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:16,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 22:05:16,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:16,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1309226844, now seen corresponding path program 1 times [2023-11-21 22:05:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:16,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988191801] [2023-11-21 22:05:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:16,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459741582] [2023-11-21 22:05:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:16,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:16,808 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:16,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:05:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:16,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:05:16,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:17,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:05:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988191801] [2023-11-21 22:05:17,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459741582] [2023-11-21 22:05:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459741582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:17,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-21 22:05:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382881764] [2023-11-21 22:05:17,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:17,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 22:05:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 22:05:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:05:17,179 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-21 22:05:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:17,590 INFO L93 Difference]: Finished difference Result 308 states and 368 transitions. [2023-11-21 22:05:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-21 22:05:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 45 [2023-11-21 22:05:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:17,598 INFO L225 Difference]: With dead ends: 308 [2023-11-21 22:05:17,598 INFO L226 Difference]: Without dead ends: 209 [2023-11-21 22:05:17,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-21 22:05:17,600 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 62 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:17,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 243 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-21 22:05:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-11-21 22:05:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 152 states have internal predecessors, (178), 26 states have call successors, (26), 20 states have call predecessors, (26), 20 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-21 22:05:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 230 transitions. [2023-11-21 22:05:17,628 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 230 transitions. Word has length 45 [2023-11-21 22:05:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:17,629 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 230 transitions. [2023-11-21 22:05:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-21 22:05:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 230 transitions. [2023-11-21 22:05:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 22:05:17,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:17,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-21 22:05:17,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:17,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 22:05:17,856 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:17,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2142934804, now seen corresponding path program 1 times [2023-11-21 22:05:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930074823] [2023-11-21 22:05:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:17,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:17,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459240094] [2023-11-21 22:05:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:17,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:17,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:17,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:05:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:17,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:05:17,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:18,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-21 22:05:18,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:18,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930074823] [2023-11-21 22:05:18,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:18,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459240094] [2023-11-21 22:05:18,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459240094] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:18,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:18,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-21 22:05:18,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110976230] [2023-11-21 22:05:18,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:18,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 22:05:18,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:18,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:05:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:05:18,233 INFO L87 Difference]: Start difference. First operand 199 states and 230 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-21 22:05:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:18,736 INFO L93 Difference]: Finished difference Result 255 states and 295 transitions. [2023-11-21 22:05:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-21 22:05:18,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 49 [2023-11-21 22:05:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:18,739 INFO L225 Difference]: With dead ends: 255 [2023-11-21 22:05:18,739 INFO L226 Difference]: Without dead ends: 253 [2023-11-21 22:05:18,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2023-11-21 22:05:18,741 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 92 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:18,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 244 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-21 22:05:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 235. [2023-11-21 22:05:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 178 states have (on average 1.1910112359550562) internal successors, (212), 180 states have internal predecessors, (212), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-21 22:05:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 272 transitions. [2023-11-21 22:05:18,770 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 272 transitions. Word has length 49 [2023-11-21 22:05:18,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:18,771 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 272 transitions. [2023-11-21 22:05:18,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-21 22:05:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 272 transitions. [2023-11-21 22:05:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 22:05:18,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:18,772 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 22:05:18,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:18,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:05:18,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:18,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash 3003121, now seen corresponding path program 1 times [2023-11-21 22:05:18,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:18,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116882704] [2023-11-21 22:05:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:18,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:19,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:19,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446491018] [2023-11-21 22:05:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:19,002 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:19,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 22:05:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:19,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:05:19,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:19,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 22:05:19,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116882704] [2023-11-21 22:05:19,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446491018] [2023-11-21 22:05:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446491018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:19,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-21 22:05:19,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200080733] [2023-11-21 22:05:19,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:19,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:05:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:05:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:05:19,463 INFO L87 Difference]: Start difference. First operand 235 states and 272 transitions. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:05:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:20,129 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2023-11-21 22:05:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-21 22:05:20,130 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 57 [2023-11-21 22:05:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:20,135 INFO L225 Difference]: With dead ends: 295 [2023-11-21 22:05:20,135 INFO L226 Difference]: Without dead ends: 293 [2023-11-21 22:05:20,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1931, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 22:05:20,138 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 179 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:20,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 262 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:05:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-21 22:05:20,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 240. [2023-11-21 22:05:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 183 states have internal predecessors, (217), 31 states have call successors, (31), 25 states have call predecessors, (31), 25 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-21 22:05:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 279 transitions. [2023-11-21 22:05:20,168 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 279 transitions. Word has length 57 [2023-11-21 22:05:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:20,169 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 279 transitions. [2023-11-21 22:05:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:05:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 279 transitions. [2023-11-21 22:05:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 22:05:20,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:20,171 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 22:05:20,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:20,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:20,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:20,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:20,388 INFO L85 PathProgramCache]: Analyzing trace with hash 112331837, now seen corresponding path program 1 times [2023-11-21 22:05:20,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:20,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388229150] [2023-11-21 22:05:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:20,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:20,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:20,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207659563] [2023-11-21 22:05:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:20,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:20,411 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:20,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 22:05:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:20,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:05:20,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:20,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 22:05:20,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388229150] [2023-11-21 22:05:20,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207659563] [2023-11-21 22:05:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207659563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:20,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-21 22:05:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114411209] [2023-11-21 22:05:20,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:20,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:05:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:05:20,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:05:20,905 INFO L87 Difference]: Start difference. First operand 240 states and 279 transitions. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:05:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:21,568 INFO L93 Difference]: Finished difference Result 339 states and 399 transitions. [2023-11-21 22:05:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-21 22:05:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 57 [2023-11-21 22:05:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:21,574 INFO L225 Difference]: With dead ends: 339 [2023-11-21 22:05:21,574 INFO L226 Difference]: Without dead ends: 337 [2023-11-21 22:05:21,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=562, Invalid=2090, Unknown=0, NotChecked=0, Total=2652 [2023-11-21 22:05:21,578 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 145 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:21,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 186 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-21 22:05:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 307. [2023-11-21 22:05:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 232 states have (on average 1.2241379310344827) internal successors, (284), 234 states have internal predecessors, (284), 39 states have call successors, (39), 33 states have call predecessors, (39), 33 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 22:05:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 362 transitions. [2023-11-21 22:05:21,621 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 362 transitions. Word has length 57 [2023-11-21 22:05:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:21,622 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 362 transitions. [2023-11-21 22:05:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:05:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 362 transitions. [2023-11-21 22:05:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 22:05:21,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:21,625 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:21,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:21,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:05:21,846 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:21,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 173123246, now seen corresponding path program 1 times [2023-11-21 22:05:21,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:21,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420275875] [2023-11-21 22:05:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:21,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:21,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356759257] [2023-11-21 22:05:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:21,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:21,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:21,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:21,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 22:05:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:21,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:05:21,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:22,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 22:05:22,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420275875] [2023-11-21 22:05:22,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:22,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356759257] [2023-11-21 22:05:22,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356759257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:22,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:22,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-11-21 22:05:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80753725] [2023-11-21 22:05:22,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:22,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:05:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:05:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:05:22,384 INFO L87 Difference]: Start difference. First operand 307 states and 362 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-21 22:05:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:23,111 INFO L93 Difference]: Finished difference Result 589 states and 704 transitions. [2023-11-21 22:05:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-21 22:05:23,112 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 61 [2023-11-21 22:05:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:23,115 INFO L225 Difference]: With dead ends: 589 [2023-11-21 22:05:23,116 INFO L226 Difference]: Without dead ends: 394 [2023-11-21 22:05:23,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=493, Invalid=1859, Unknown=0, NotChecked=0, Total=2352 [2023-11-21 22:05:23,119 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 140 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:23,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 243 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-21 22:05:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 367. [2023-11-21 22:05:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 276 states have (on average 1.2173913043478262) internal successors, (336), 278 states have internal predecessors, (336), 47 states have call successors, (47), 41 states have call predecessors, (47), 41 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-21 22:05:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 430 transitions. [2023-11-21 22:05:23,158 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 430 transitions. Word has length 61 [2023-11-21 22:05:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:23,158 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 430 transitions. [2023-11-21 22:05:23,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-21 22:05:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 430 transitions. [2023-11-21 22:05:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-21 22:05:23,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:23,160 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 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] [2023-11-21 22:05:23,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:23,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:05:23,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1437765484, now seen corresponding path program 1 times [2023-11-21 22:05:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252831571] [2023-11-21 22:05:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:23,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118710505] [2023-11-21 22:05:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:23,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:23,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:23,399 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:23,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-21 22:05:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:23,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:05:23,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:23,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 22:05:23,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252831571] [2023-11-21 22:05:23,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118710505] [2023-11-21 22:05:23,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118710505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:23,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:23,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-21 22:05:23,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028075663] [2023-11-21 22:05:23,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:23,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-21 22:05:23,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-21 22:05:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:05:23,980 INFO L87 Difference]: Start difference. First operand 367 states and 430 transitions. Second operand has 28 states, 27 states have (on average 2.740740740740741) internal successors, (74), 28 states have internal predecessors, (74), 13 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-21 22:05:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:24,760 INFO L93 Difference]: Finished difference Result 421 states and 488 transitions. [2023-11-21 22:05:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-21 22:05:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.740740740740741) internal successors, (74), 28 states have internal predecessors, (74), 13 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) Word has length 65 [2023-11-21 22:05:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:24,767 INFO L225 Difference]: With dead ends: 421 [2023-11-21 22:05:24,767 INFO L226 Difference]: Without dead ends: 420 [2023-11-21 22:05:24,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=699, Invalid=2841, Unknown=0, NotChecked=0, Total=3540 [2023-11-21 22:05:24,770 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 149 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:24,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 298 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:05:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-21 22:05:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 292. [2023-11-21 22:05:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 219 states have (on average 1.2054794520547945) internal successors, (264), 221 states have internal predecessors, (264), 38 states have call successors, (38), 32 states have call predecessors, (38), 32 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-21 22:05:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 340 transitions. [2023-11-21 22:05:24,804 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 340 transitions. Word has length 65 [2023-11-21 22:05:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:24,804 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 340 transitions. [2023-11-21 22:05:24,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.740740740740741) internal successors, (74), 28 states have internal predecessors, (74), 13 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-21 22:05:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 340 transitions. [2023-11-21 22:05:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-21 22:05:24,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:24,806 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:24,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-21 22:05:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 22:05:25,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:25,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:25,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1982335207, now seen corresponding path program 2 times [2023-11-21 22:05:25,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874252563] [2023-11-21 22:05:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:25,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:25,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597469733] [2023-11-21 22:05:25,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:25,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:25,044 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:25,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-21 22:05:25,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:25,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:25,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:05:25,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:25,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-21 22:05:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874252563] [2023-11-21 22:05:25,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597469733] [2023-11-21 22:05:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597469733] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:25,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 33 [2023-11-21 22:05:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768600160] [2023-11-21 22:05:25,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:25,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 22:05:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 22:05:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 22:05:25,722 INFO L87 Difference]: Start difference. First operand 292 states and 340 transitions. Second operand has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-21 22:05:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:26,678 INFO L93 Difference]: Finished difference Result 705 states and 837 transitions. [2023-11-21 22:05:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-21 22:05:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 73 [2023-11-21 22:05:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:26,684 INFO L225 Difference]: With dead ends: 705 [2023-11-21 22:05:26,684 INFO L226 Difference]: Without dead ends: 561 [2023-11-21 22:05:26,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1110, Invalid=4146, Unknown=0, NotChecked=0, Total=5256 [2023-11-21 22:05:26,688 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 187 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:26,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 351 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:05:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-21 22:05:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 471. [2023-11-21 22:05:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 354 states have (on average 1.2175141242937852) internal successors, (431), 356 states have internal predecessors, (431), 60 states have call successors, (60), 54 states have call predecessors, (60), 54 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-21 22:05:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 551 transitions. [2023-11-21 22:05:26,752 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 551 transitions. Word has length 73 [2023-11-21 22:05:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:26,753 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 551 transitions. [2023-11-21 22:05:26,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-21 22:05:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 551 transitions. [2023-11-21 22:05:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-21 22:05:26,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:26,756 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:26,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:26,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 22:05:26,972 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:26,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash -50207287, now seen corresponding path program 2 times [2023-11-21 22:05:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:26,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901750930] [2023-11-21 22:05:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:26,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:26,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433999400] [2023-11-21 22:05:26,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:26,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:26,986 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:27,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-21 22:05:27,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:27,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:27,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:05:27,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:27,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-21 22:05:27,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901750930] [2023-11-21 22:05:27,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:27,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433999400] [2023-11-21 22:05:27,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433999400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:27,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 33 [2023-11-21 22:05:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449644854] [2023-11-21 22:05:27,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 22:05:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 22:05:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 22:05:27,681 INFO L87 Difference]: Start difference. First operand 471 states and 551 transitions. Second operand has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-21 22:05:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:28,521 INFO L93 Difference]: Finished difference Result 705 states and 840 transitions. [2023-11-21 22:05:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-21 22:05:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 73 [2023-11-21 22:05:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:28,525 INFO L225 Difference]: With dead ends: 705 [2023-11-21 22:05:28,526 INFO L226 Difference]: Without dead ends: 561 [2023-11-21 22:05:28,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1142, Invalid=2764, Unknown=0, NotChecked=0, Total=3906 [2023-11-21 22:05:28,529 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 249 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:28,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 271 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:05:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-21 22:05:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2023-11-21 22:05:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 399 states have (on average 1.2255639097744362) internal successors, (489), 401 states have internal predecessors, (489), 67 states have call successors, (67), 61 states have call predecessors, (67), 61 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-21 22:05:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 623 transitions. [2023-11-21 22:05:28,616 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 623 transitions. Word has length 73 [2023-11-21 22:05:28,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:28,617 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 623 transitions. [2023-11-21 22:05:28,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-21 22:05:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 623 transitions. [2023-11-21 22:05:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-21 22:05:28,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:28,626 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:28,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:28,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:28,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:28,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash 191241006, now seen corresponding path program 2 times [2023-11-21 22:05:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:28,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227373651] [2023-11-21 22:05:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:28,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:28,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003824911] [2023-11-21 22:05:28,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:28,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:28,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:28,858 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:28,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-21 22:05:28,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:28,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:28,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:05:28,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 92 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:29,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 50 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-21 22:05:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227373651] [2023-11-21 22:05:29,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:29,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003824911] [2023-11-21 22:05:29,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003824911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:29,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:29,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 25 [2023-11-21 22:05:29,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774348179] [2023-11-21 22:05:29,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:29,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-21 22:05:29,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-21 22:05:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:05:29,483 INFO L87 Difference]: Start difference. First operand 530 states and 623 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-21 22:05:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:30,110 INFO L93 Difference]: Finished difference Result 761 states and 900 transitions. [2023-11-21 22:05:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-21 22:05:30,111 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) Word has length 77 [2023-11-21 22:05:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:30,115 INFO L225 Difference]: With dead ends: 761 [2023-11-21 22:05:30,115 INFO L226 Difference]: Without dead ends: 617 [2023-11-21 22:05:30,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 120 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=2020, Unknown=0, NotChecked=0, Total=2550 [2023-11-21 22:05:30,117 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 147 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:30,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 237 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-21 22:05:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 558. [2023-11-21 22:05:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 419 states have (on average 1.224343675417661) internal successors, (513), 421 states have internal predecessors, (513), 71 states have call successors, (71), 65 states have call predecessors, (71), 65 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-21 22:05:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 655 transitions. [2023-11-21 22:05:30,178 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 655 transitions. Word has length 77 [2023-11-21 22:05:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:30,179 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 655 transitions. [2023-11-21 22:05:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-21 22:05:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 655 transitions. [2023-11-21 22:05:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-21 22:05:30,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:30,182 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:30,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:30,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:30,395 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:30,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:30,396 INFO L85 PathProgramCache]: Analyzing trace with hash 377013228, now seen corresponding path program 2 times [2023-11-21 22:05:30,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:30,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318530202] [2023-11-21 22:05:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:30,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525962246] [2023-11-21 22:05:30,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:30,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:30,408 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:30,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-21 22:05:30,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:30,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:30,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:05:30,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 110 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:30,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-21 22:05:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318530202] [2023-11-21 22:05:31,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525962246] [2023-11-21 22:05:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525962246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:31,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-11-21 22:05:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009200352] [2023-11-21 22:05:31,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-21 22:05:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:31,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-21 22:05:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2023-11-21 22:05:31,147 INFO L87 Difference]: Start difference. First operand 558 states and 655 transitions. Second operand has 36 states, 35 states have (on average 2.742857142857143) internal successors, (96), 36 states have internal predecessors, (96), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-21 22:05:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:32,376 INFO L93 Difference]: Finished difference Result 769 states and 906 transitions. [2023-11-21 22:05:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-21 22:05:32,377 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.742857142857143) internal successors, (96), 36 states have internal predecessors, (96), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) Word has length 81 [2023-11-21 22:05:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:32,381 INFO L225 Difference]: With dead ends: 769 [2023-11-21 22:05:32,382 INFO L226 Difference]: Without dead ends: 766 [2023-11-21 22:05:32,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1224, Invalid=5096, Unknown=0, NotChecked=0, Total=6320 [2023-11-21 22:05:32,385 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 269 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:32,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 276 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:05:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-21 22:05:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 508. [2023-11-21 22:05:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 383 states have (on average 1.2140992167101827) internal successors, (465), 387 states have internal predecessors, (465), 64 states have call successors, (64), 58 states have call predecessors, (64), 58 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-11-21 22:05:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 593 transitions. [2023-11-21 22:05:32,445 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 593 transitions. Word has length 81 [2023-11-21 22:05:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:32,445 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 593 transitions. [2023-11-21 22:05:32,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.742857142857143) internal successors, (96), 36 states have internal predecessors, (96), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-21 22:05:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 593 transitions. [2023-11-21 22:05:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 22:05:32,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:32,448 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 4, 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] [2023-11-21 22:05:32,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 22:05:32,659 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1470342159, now seen corresponding path program 2 times [2023-11-21 22:05:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515982415] [2023-11-21 22:05:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:32,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:32,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695767615] [2023-11-21 22:05:32,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:32,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:32,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:32,688 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:32,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-21 22:05:32,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:32,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:32,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:05:32,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 170 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:33,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 114 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-21 22:05:33,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515982415] [2023-11-21 22:05:33,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695767615] [2023-11-21 22:05:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695767615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:33,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:33,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 24 [2023-11-21 22:05:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10247570] [2023-11-21 22:05:33,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:33,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:05:33,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:05:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:05:33,377 INFO L87 Difference]: Start difference. First operand 508 states and 593 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 10 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-21 22:05:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:33,928 INFO L93 Difference]: Finished difference Result 741 states and 872 transitions. [2023-11-21 22:05:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-21 22:05:33,930 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 10 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 85 [2023-11-21 22:05:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:33,935 INFO L225 Difference]: With dead ends: 741 [2023-11-21 22:05:33,936 INFO L226 Difference]: Without dead ends: 574 [2023-11-21 22:05:33,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 132 SyntacticMatches, 14 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2023-11-21 22:05:33,940 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 122 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:33,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 211 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:05:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-21 22:05:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 552. [2023-11-21 22:05:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 417 states have (on average 1.2038369304556356) internal successors, (502), 421 states have internal predecessors, (502), 69 states have call successors, (69), 63 states have call predecessors, (69), 63 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-21 22:05:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 640 transitions. [2023-11-21 22:05:34,010 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 640 transitions. Word has length 85 [2023-11-21 22:05:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:34,010 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 640 transitions. [2023-11-21 22:05:34,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 10 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-21 22:05:34,011 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 640 transitions. [2023-11-21 22:05:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:05:34,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:34,015 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 7, 7, 7, 7, 7, 6, 4, 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] [2023-11-21 22:05:34,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:34,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:34,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:34,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2062224307, now seen corresponding path program 2 times [2023-11-21 22:05:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:34,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196193470] [2023-11-21 22:05:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:34,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17674767] [2023-11-21 22:05:34,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:34,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:34,247 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:34,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-21 22:05:34,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:34,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:34,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:05:34,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 198 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:34,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 126 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-21 22:05:35,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196193470] [2023-11-21 22:05:35,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17674767] [2023-11-21 22:05:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17674767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:35,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-11-21 22:05:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990330843] [2023-11-21 22:05:35,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-21 22:05:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-21 22:05:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560 [2023-11-21 22:05:35,070 INFO L87 Difference]: Start difference. First operand 552 states and 640 transitions. Second operand has 40 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 40 states have internal predecessors, (107), 19 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-21 22:05:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:36,381 INFO L93 Difference]: Finished difference Result 809 states and 953 transitions. [2023-11-21 22:05:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-21 22:05:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 40 states have internal predecessors, (107), 19 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) Word has length 89 [2023-11-21 22:05:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:36,387 INFO L225 Difference]: With dead ends: 809 [2023-11-21 22:05:36,387 INFO L226 Difference]: Without dead ends: 807 [2023-11-21 22:05:36,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1751, Invalid=6259, Unknown=0, NotChecked=0, Total=8010 [2023-11-21 22:05:36,391 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 315 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:36,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 245 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:05:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-11-21 22:05:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 609. [2023-11-21 22:05:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 460 states have (on average 1.2173913043478262) internal successors, (560), 463 states have internal predecessors, (560), 76 states have call successors, (76), 70 states have call predecessors, (76), 70 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-21 22:05:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 712 transitions. [2023-11-21 22:05:36,478 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 712 transitions. Word has length 89 [2023-11-21 22:05:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:36,479 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 712 transitions. [2023-11-21 22:05:36,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 40 states have internal predecessors, (107), 19 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-21 22:05:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 712 transitions. [2023-11-21 22:05:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-21 22:05:36,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:36,482 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:36,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:36,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-21 22:05:36,695 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:36,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:36,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1331747764, now seen corresponding path program 2 times [2023-11-21 22:05:36,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:36,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879717332] [2023-11-21 22:05:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:36,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:36,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884426533] [2023-11-21 22:05:36,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:36,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:36,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:36,708 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:36,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-21 22:05:36,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:36,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:36,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:05:36,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:37,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-21 22:05:37,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879717332] [2023-11-21 22:05:37,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:37,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884426533] [2023-11-21 22:05:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884426533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:37,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2023-11-21 22:05:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722084598] [2023-11-21 22:05:37,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:37,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-21 22:05:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-21 22:05:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=1595, Unknown=0, NotChecked=0, Total=2070 [2023-11-21 22:05:37,700 INFO L87 Difference]: Start difference. First operand 609 states and 712 transitions. Second operand has 46 states, 45 states have (on average 2.6666666666666665) internal successors, (120), 46 states have internal predecessors, (120), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-21 22:05:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:39,454 INFO L93 Difference]: Finished difference Result 1046 states and 1249 transitions. [2023-11-21 22:05:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-11-21 22:05:39,455 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6666666666666665) internal successors, (120), 46 states have internal predecessors, (120), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) Word has length 93 [2023-11-21 22:05:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:39,460 INFO L225 Difference]: With dead ends: 1046 [2023-11-21 22:05:39,460 INFO L226 Difference]: Without dead ends: 822 [2023-11-21 22:05:39,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2924 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2529, Invalid=8813, Unknown=0, NotChecked=0, Total=11342 [2023-11-21 22:05:39,465 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 327 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:39,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 380 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:05:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-21 22:05:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 734. [2023-11-21 22:05:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 553 states have (on average 1.2314647377938517) internal successors, (681), 556 states have internal predecessors, (681), 92 states have call successors, (92), 86 states have call predecessors, (92), 86 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-21 22:05:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 865 transitions. [2023-11-21 22:05:39,557 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 865 transitions. Word has length 93 [2023-11-21 22:05:39,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:39,558 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 865 transitions. [2023-11-21 22:05:39,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6666666666666665) internal successors, (120), 46 states have internal predecessors, (120), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-21 22:05:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 865 transitions. [2023-11-21 22:05:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-21 22:05:39,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:39,561 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:39,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-21 22:05:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:39,763 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:39,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1353543568, now seen corresponding path program 3 times [2023-11-21 22:05:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104295529] [2023-11-21 22:05:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:39,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:39,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490630495] [2023-11-21 22:05:39,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:05:39,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:39,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:39,780 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:39,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-21 22:05:39,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 22:05:39,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:39,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:05:39,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-21 22:05:39,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:39,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104295529] [2023-11-21 22:05:39,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:39,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490630495] [2023-11-21 22:05:39,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490630495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:39,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:39,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903095915] [2023-11-21 22:05:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:05:39,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:05:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:39,898 INFO L87 Difference]: Start difference. First operand 734 states and 865 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:05:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:40,040 INFO L93 Difference]: Finished difference Result 764 states and 899 transitions. [2023-11-21 22:05:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:05:40,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-21 22:05:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:40,046 INFO L225 Difference]: With dead ends: 764 [2023-11-21 22:05:40,046 INFO L226 Difference]: Without dead ends: 763 [2023-11-21 22:05:40,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:40,048 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:40,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 92 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-11-21 22:05:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 702. [2023-11-21 22:05:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 529 states have (on average 1.2306238185255198) internal successors, (651), 532 states have internal predecessors, (651), 88 states have call successors, (88), 82 states have call predecessors, (88), 82 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-21 22:05:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 827 transitions. [2023-11-21 22:05:40,139 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 827 transitions. Word has length 97 [2023-11-21 22:05:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:40,139 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 827 transitions. [2023-11-21 22:05:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:05:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 827 transitions. [2023-11-21 22:05:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-21 22:05:40,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:40,143 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:40,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-21 22:05:40,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-21 22:05:40,355 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:40,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash 583927404, now seen corresponding path program 3 times [2023-11-21 22:05:40,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:40,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126653263] [2023-11-21 22:05:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:40,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:40,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:40,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937124398] [2023-11-21 22:05:40,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:05:40,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:40,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:40,368 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:40,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-21 22:05:40,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 22:05:40,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:40,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:05:40,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-21 22:05:40,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:40,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:40,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126653263] [2023-11-21 22:05:40,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937124398] [2023-11-21 22:05:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937124398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909419572] [2023-11-21 22:05:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:40,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:05:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:05:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:40,471 INFO L87 Difference]: Start difference. First operand 702 states and 827 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:05:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:40,618 INFO L93 Difference]: Finished difference Result 726 states and 851 transitions. [2023-11-21 22:05:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:05:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-21 22:05:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:40,623 INFO L225 Difference]: With dead ends: 726 [2023-11-21 22:05:40,624 INFO L226 Difference]: Without dead ends: 725 [2023-11-21 22:05:40,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:40,625 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:40,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-11-21 22:05:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 686. [2023-11-21 22:05:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 517 states have (on average 1.2321083172147003) internal successors, (637), 520 states have internal predecessors, (637), 86 states have call successors, (86), 80 states have call predecessors, (86), 80 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-21 22:05:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 809 transitions. [2023-11-21 22:05:40,707 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 809 transitions. Word has length 97 [2023-11-21 22:05:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:40,708 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 809 transitions. [2023-11-21 22:05:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:05:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 809 transitions. [2023-11-21 22:05:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-21 22:05:40,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:40,711 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:40,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:40,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-21 22:05:40,912 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:40,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1827306639, now seen corresponding path program 3 times [2023-11-21 22:05:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344903590] [2023-11-21 22:05:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:40,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:40,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:40,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733143047] [2023-11-21 22:05:40,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:05:40,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:40,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:40,928 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:40,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-21 22:05:40,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 22:05:40,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:40,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:05:40,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-21 22:05:41,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-21 22:05:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344903590] [2023-11-21 22:05:41,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733143047] [2023-11-21 22:05:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733143047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:41,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:41,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-21 22:05:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566891060] [2023-11-21 22:05:41,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:05:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:05:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:05:41,131 INFO L87 Difference]: Start difference. First operand 686 states and 809 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:05:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:41,364 INFO L93 Difference]: Finished difference Result 731 states and 858 transitions. [2023-11-21 22:05:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:05:41,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2023-11-21 22:05:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:41,372 INFO L225 Difference]: With dead ends: 731 [2023-11-21 22:05:41,372 INFO L226 Difference]: Without dead ends: 730 [2023-11-21 22:05:41,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:05:41,373 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:41,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 170 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-11-21 22:05:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 548. [2023-11-21 22:05:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 411 states have (on average 1.218978102189781) internal successors, (501), 416 states have internal predecessors, (501), 70 states have call successors, (70), 64 states have call predecessors, (70), 64 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-21 22:05:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 641 transitions. [2023-11-21 22:05:41,446 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 641 transitions. Word has length 101 [2023-11-21 22:05:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:41,447 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 641 transitions. [2023-11-21 22:05:41,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:05:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 641 transitions. [2023-11-21 22:05:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-21 22:05:41,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:41,450 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:41,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-21 22:05:41,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-21 22:05:41,671 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:41,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1004396774, now seen corresponding path program 1 times [2023-11-21 22:05:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835265633] [2023-11-21 22:05:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:41,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:41,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962695697] [2023-11-21 22:05:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:41,687 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:41,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-21 22:05:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:41,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-21 22:05:41,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 3 proven. 342 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:05:42,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 3 proven. 252 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-21 22:05:42,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835265633] [2023-11-21 22:05:42,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962695697] [2023-11-21 22:05:42,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962695697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:42,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:42,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-11-21 22:05:42,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049378777] [2023-11-21 22:05:42,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:42,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-21 22:05:42,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:42,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-21 22:05:42,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2023-11-21 22:05:42,958 INFO L87 Difference]: Start difference. First operand 548 states and 641 transitions. Second operand has 52 states, 51 states have (on average 2.627450980392157) internal successors, (134), 52 states have internal predecessors, (134), 21 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2023-11-21 22:05:45,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:45,077 INFO L93 Difference]: Finished difference Result 812 states and 961 transitions. [2023-11-21 22:05:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-21 22:05:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.627450980392157) internal successors, (134), 52 states have internal predecessors, (134), 21 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) Word has length 105 [2023-11-21 22:05:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:45,082 INFO L225 Difference]: With dead ends: 812 [2023-11-21 22:05:45,082 INFO L226 Difference]: Without dead ends: 809 [2023-11-21 22:05:45,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3116, Invalid=11164, Unknown=0, NotChecked=0, Total=14280 [2023-11-21 22:05:45,085 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 551 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:45,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 261 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:05:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2023-11-21 22:05:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 481. [2023-11-21 22:05:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 360 states have (on average 1.2166666666666666) internal successors, (438), 365 states have internal predecessors, (438), 62 states have call successors, (62), 56 states have call predecessors, (62), 56 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-21 22:05:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 562 transitions. [2023-11-21 22:05:45,178 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 562 transitions. Word has length 105 [2023-11-21 22:05:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:45,179 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 562 transitions. [2023-11-21 22:05:45,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.627450980392157) internal successors, (134), 52 states have internal predecessors, (134), 21 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2023-11-21 22:05:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 562 transitions. [2023-11-21 22:05:45,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-21 22:05:45,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:45,184 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:45,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:45,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-21 22:05:45,405 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:45,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash -606137337, now seen corresponding path program 3 times [2023-11-21 22:05:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:45,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804145766] [2023-11-21 22:05:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:45,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:45,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869616451] [2023-11-21 22:05:45,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:05:45,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:45,432 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:45,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-21 22:05:45,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 22:05:45,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:45,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:05:45,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 1475 trivial. 0 not checked. [2023-11-21 22:05:45,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804145766] [2023-11-21 22:05:45,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869616451] [2023-11-21 22:05:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869616451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222797586] [2023-11-21 22:05:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:45,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:05:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:05:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:45,553 INFO L87 Difference]: Start difference. First operand 481 states and 562 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:05:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:45,672 INFO L93 Difference]: Finished difference Result 497 states and 578 transitions. [2023-11-21 22:05:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:05:45,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 185 [2023-11-21 22:05:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:45,676 INFO L225 Difference]: With dead ends: 497 [2023-11-21 22:05:45,676 INFO L226 Difference]: Without dead ends: 496 [2023-11-21 22:05:45,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:45,687 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:45,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:05:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-21 22:05:45,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 480. [2023-11-21 22:05:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 360 states have (on average 1.2138888888888888) internal successors, (437), 364 states have internal predecessors, (437), 62 states have call successors, (62), 56 states have call predecessors, (62), 56 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-21 22:05:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 561 transitions. [2023-11-21 22:05:45,760 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 561 transitions. Word has length 185 [2023-11-21 22:05:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:45,762 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 561 transitions. [2023-11-21 22:05:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:05:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 561 transitions. [2023-11-21 22:05:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-21 22:05:45,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:45,766 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:45,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-21 22:05:45,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-21 22:05:45,987 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:45,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash -289907656, now seen corresponding path program 3 times [2023-11-21 22:05:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312778394] [2023-11-21 22:05:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:46,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211838763] [2023-11-21 22:05:46,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:05:46,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:46,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:46,009 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:46,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-21 22:05:46,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 22:05:46,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:46,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:05:46,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1652 backedges. 176 proven. 1 refuted. 0 times theorem prover too weak. 1475 trivial. 0 not checked. [2023-11-21 22:05:46,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1652 backedges. 136 proven. 1 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2023-11-21 22:05:46,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312778394] [2023-11-21 22:05:46,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211838763] [2023-11-21 22:05:46,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211838763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:46,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:46,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-21 22:05:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118714383] [2023-11-21 22:05:46,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:46,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:05:46,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:05:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:05:46,275 INFO L87 Difference]: Start difference. First operand 480 states and 561 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:05:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:46,490 INFO L93 Difference]: Finished difference Result 538 states and 624 transitions. [2023-11-21 22:05:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:05:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 189 [2023-11-21 22:05:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:46,494 INFO L225 Difference]: With dead ends: 538 [2023-11-21 22:05:46,494 INFO L226 Difference]: Without dead ends: 537 [2023-11-21 22:05:46,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:05:46,496 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:46,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 185 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-11-21 22:05:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 486. [2023-11-21 22:05:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 365 states have (on average 1.210958904109589) internal successors, (442), 369 states have internal predecessors, (442), 63 states have call successors, (63), 57 states have call predecessors, (63), 57 states have return successors, (63), 59 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-21 22:05:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 568 transitions. [2023-11-21 22:05:46,565 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 568 transitions. Word has length 189 [2023-11-21 22:05:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:46,566 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 568 transitions. [2023-11-21 22:05:46,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:05:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 568 transitions. [2023-11-21 22:05:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-21 22:05:46,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:46,570 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:46,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:46,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:46,791 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:46,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash -429293271, now seen corresponding path program 2 times [2023-11-21 22:05:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:46,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58646139] [2023-11-21 22:05:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:46,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:46,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:46,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510453713] [2023-11-21 22:05:46,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:05:46,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:46,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:46,813 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:46,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-21 22:05:46,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:05:46,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:46,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:05:46,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 1194 proven. 9 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-21 22:05:47,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 884 proven. 9 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-11-21 22:05:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58646139] [2023-11-21 22:05:47,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:47,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510453713] [2023-11-21 22:05:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510453713] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:47,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 24 [2023-11-21 22:05:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511030325] [2023-11-21 22:05:47,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:05:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:05:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:05:47,701 INFO L87 Difference]: Start difference. First operand 486 states and 568 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 12 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2023-11-21 22:05:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:48,246 INFO L93 Difference]: Finished difference Result 743 states and 879 transitions. [2023-11-21 22:05:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-21 22:05:48,247 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 12 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) Word has length 193 [2023-11-21 22:05:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:48,250 INFO L225 Difference]: With dead ends: 743 [2023-11-21 22:05:48,250 INFO L226 Difference]: Without dead ends: 508 [2023-11-21 22:05:48,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 341 SyntacticMatches, 21 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=592, Invalid=1388, Unknown=0, NotChecked=0, Total=1980 [2023-11-21 22:05:48,251 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 65 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:48,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 457 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:05:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-21 22:05:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 490. [2023-11-21 22:05:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 369 states have (on average 1.2086720867208671) internal successors, (446), 373 states have internal predecessors, (446), 63 states have call successors, (63), 57 states have call predecessors, (63), 57 states have return successors, (63), 59 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-21 22:05:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 572 transitions. [2023-11-21 22:05:48,320 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 572 transitions. Word has length 193 [2023-11-21 22:05:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:48,320 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 572 transitions. [2023-11-21 22:05:48,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 12 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2023-11-21 22:05:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 572 transitions. [2023-11-21 22:05:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-21 22:05:48,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:48,324 INFO L195 NwaCegarLoop]: trace histogram [25, 22, 22, 22, 21, 21, 21, 20, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:48,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:48,546 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -637348163, now seen corresponding path program 1 times [2023-11-21 22:05:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530032962] [2023-11-21 22:05:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:48,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:48,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848932566] [2023-11-21 22:05:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:48,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:48,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:48,568 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:48,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-21 22:05:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:48,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:05:48,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 1124 proven. 6 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-11-21 22:05:49,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 734 proven. 6 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2023-11-21 22:05:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530032962] [2023-11-21 22:05:49,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848932566] [2023-11-21 22:05:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848932566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:49,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 24 [2023-11-21 22:05:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355615999] [2023-11-21 22:05:49,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:49,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:05:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:49,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:05:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:05:49,460 INFO L87 Difference]: Start difference. First operand 490 states and 572 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 12 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2023-11-21 22:05:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:50,245 INFO L93 Difference]: Finished difference Result 873 states and 1031 transitions. [2023-11-21 22:05:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-21 22:05:50,245 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 12 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) Word has length 225 [2023-11-21 22:05:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:50,247 INFO L225 Difference]: With dead ends: 873 [2023-11-21 22:05:50,247 INFO L226 Difference]: Without dead ends: 353 [2023-11-21 22:05:50,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 405 SyntacticMatches, 21 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2023-11-21 22:05:50,250 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 80 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:50,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 401 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:05:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-21 22:05:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 288. [2023-11-21 22:05:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 216 states have (on average 1.2407407407407407) internal successors, (268), 216 states have internal predecessors, (268), 37 states have call successors, (37), 34 states have call predecessors, (37), 34 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 22:05:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 342 transitions. [2023-11-21 22:05:50,304 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 342 transitions. Word has length 225 [2023-11-21 22:05:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:50,305 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 342 transitions. [2023-11-21 22:05:50,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 12 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2023-11-21 22:05:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 342 transitions. [2023-11-21 22:05:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-21 22:05:50,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:50,309 INFO L195 NwaCegarLoop]: trace histogram [25, 23, 23, 23, 22, 22, 22, 21, 4, 3, 3, 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] [2023-11-21 22:05:50,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:50,523 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:50,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1368827249, now seen corresponding path program 1 times [2023-11-21 22:05:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164710665] [2023-11-21 22:05:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:50,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:50,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234650842] [2023-11-21 22:05:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:50,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:50,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:50,544 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:50,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-21 22:05:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:50,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:05:50,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2023-11-21 22:05:50,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:05:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164710665] [2023-11-21 22:05:50,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234650842] [2023-11-21 22:05:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234650842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:05:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476359356] [2023-11-21 22:05:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:05:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:05:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:50,745 INFO L87 Difference]: Start difference. First operand 288 states and 342 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:05:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:50,803 INFO L93 Difference]: Finished difference Result 506 states and 609 transitions. [2023-11-21 22:05:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:05:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 225 [2023-11-21 22:05:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:50,806 INFO L225 Difference]: With dead ends: 506 [2023-11-21 22:05:50,806 INFO L226 Difference]: Without dead ends: 292 [2023-11-21 22:05:50,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:50,808 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:50,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 77 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:05:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-21 22:05:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2023-11-21 22:05:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 219 states have (on average 1.1141552511415524) internal successors, (244), 219 states have internal predecessors, (244), 37 states have call successors, (37), 34 states have call predecessors, (37), 34 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 22:05:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2023-11-21 22:05:50,847 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 225 [2023-11-21 22:05:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:50,847 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2023-11-21 22:05:50,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:05:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2023-11-21 22:05:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-21 22:05:50,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:50,850 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 29, 29, 29, 29, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:50,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:51,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-21 22:05:51,071 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:05:51,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1019123337, now seen corresponding path program 3 times [2023-11-21 22:05:51,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:51,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668122288] [2023-11-21 22:05:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:51,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:51,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:05:51,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986454660] [2023-11-21 22:05:51,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:05:51,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:51,096 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:51,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-21 22:05:51,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 22:05:51,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:05:51,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:05:51,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 274 proven. 1 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2023-11-21 22:05:51,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 214 proven. 1 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2023-11-21 22:05:51,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668122288] [2023-11-21 22:05:51,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:05:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986454660] [2023-11-21 22:05:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986454660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:51,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:05:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-21 22:05:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659073071] [2023-11-21 22:05:51,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:51,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:05:51,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:05:51,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:05:51,435 INFO L87 Difference]: Start difference. First operand 291 states and 318 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:05:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:05:51,748 INFO L93 Difference]: Finished difference Result 322 states and 352 transitions. [2023-11-21 22:05:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 22:05:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 281 [2023-11-21 22:05:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:05:51,749 INFO L225 Difference]: With dead ends: 322 [2023-11-21 22:05:51,749 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:05:51,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2023-11-21 22:05:51,750 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:05:51,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 145 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:05:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:05:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:05:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:05:51,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 281 [2023-11-21 22:05:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:05:51,752 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:05:51,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:05:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:05:51,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:05:51,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-21 22:05:51,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-21 22:05:51,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-21 22:05:51,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-21 22:05:51,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-21 22:05:51,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-21 22:05:51,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7568d964-f416-48ad-ae1c-8aefa78bd613/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-21 22:05:51,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.