./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme --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 4b6ae28789704f5fd465d11d450ce27cd9b971ac76fe8e36268d0ace5b5b057f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:37,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:37,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:45:37,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:37,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:37,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:37,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:37,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:37,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:37,487 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:37,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:37,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:37,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:37,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:37,493 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:37,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:37,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:37,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:37,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:37,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:37,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:37,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:37,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:37,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:37,498 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:45:37,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:45:37,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:37,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:37,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:37,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:37,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:37,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:37,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:37,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:37,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:37,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:37,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:37,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:37,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:37,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:37,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:37,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:37,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:37,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:37,508 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_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b6ae28789704f5fd465d11d450ce27cd9b971ac76fe8e36268d0ace5b5b057f [2023-11-26 11:45:37,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:37,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:37,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:37,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:37,852 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:37,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2023-11-26 11:45:41,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:41,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:41,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2023-11-26 11:45:41,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/data/f1e2874c3/e990064ca2b14f10a9b55dd986214461/FLAGd5704a92c [2023-11-26 11:45:41,521 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/data/f1e2874c3/e990064ca2b14f10a9b55dd986214461 [2023-11-26 11:45:41,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:41,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:41,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:41,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:41,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:41,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6192cd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41, skipping insertion in model container [2023-11-26 11:45:41,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:41,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:41,736 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:41,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:41,771 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:41,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41 WrapperNode [2023-11-26 11:45:41,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:41,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:41,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:41,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:41,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,815 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2023-11-26 11:45:41,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:41,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:41,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:41,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:41,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,869 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:45:41,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,876 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:41,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:41,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:41,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:41,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (1/1) ... [2023-11-26 11:45:41,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:41,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:41,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:41,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:41,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:45:41,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:45:42,060 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:42,064 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:42,525 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:42,551 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:42,551 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:42,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:42 BoogieIcfgContainer [2023-11-26 11:45:42,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:42,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:42,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:42,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:42,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:41" (1/3) ... [2023-11-26 11:45:42,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e770d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:42, skipping insertion in model container [2023-11-26 11:45:42,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:41" (2/3) ... [2023-11-26 11:45:42,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e770d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:42, skipping insertion in model container [2023-11-26 11:45:42,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:42" (3/3) ... [2023-11-26 11:45:42,562 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2023-11-26 11:45:42,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:42,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-11-26 11:45:42,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:42,639 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;@1d689b54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:42,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-11-26 11:45:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 112 states have internal predecessors, (116), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:45:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:45:42,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:42,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:45:42,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:42,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 187138, now seen corresponding path program 1 times [2023-11-26 11:45:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:42,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674374969] [2023-11-26 11:45:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:42,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674374969] [2023-11-26 11:45:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674374969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:42,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:42,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246806171] [2023-11-26 11:45:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:42,853 INFO L87 Difference]: Start difference. First operand has 120 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 112 states have internal predecessors, (116), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:42,893 INFO L93 Difference]: Finished difference Result 235 states and 261 transitions. [2023-11-26 11:45:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 11:45:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:42,904 INFO L225 Difference]: With dead ends: 235 [2023-11-26 11:45:42,905 INFO L226 Difference]: Without dead ends: 113 [2023-11-26 11:45:42,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:42,913 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:42,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-26 11:45:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-11-26 11:45:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 106 states have internal predecessors, (108), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:45:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2023-11-26 11:45:42,988 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 3 [2023-11-26 11:45:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:42,989 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2023-11-26 11:45:42,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2023-11-26 11:45:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:45:42,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:42,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:45:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:42,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:42,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 184737, now seen corresponding path program 1 times [2023-11-26 11:45:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:42,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928994041] [2023-11-26 11:45:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:43,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928994041] [2023-11-26 11:45:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928994041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:43,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321640689] [2023-11-26 11:45:43,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:43,077 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:43,137 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2023-11-26 11:45:43,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:43,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 11:45:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:43,139 INFO L225 Difference]: With dead ends: 167 [2023-11-26 11:45:43,140 INFO L226 Difference]: Without dead ends: 117 [2023-11-26 11:45:43,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:43,142 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 4 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:43,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 337 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-26 11:45:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-26 11:45:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 63 states have (on average 1.7777777777777777) internal successors, (112), 110 states have internal predecessors, (112), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:45:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2023-11-26 11:45:43,157 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 3 [2023-11-26 11:45:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:43,157 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2023-11-26 11:45:43,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2023-11-26 11:45:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:45:43,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:43,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:45:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:43,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:43,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1208573546, now seen corresponding path program 1 times [2023-11-26 11:45:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398088303] [2023-11-26 11:45:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:43,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398088303] [2023-11-26 11:45:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398088303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:43,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:43,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:45:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346329882] [2023-11-26 11:45:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:43,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:43,242 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:43,411 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2023-11-26 11:45:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:45:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:43,414 INFO L225 Difference]: With dead ends: 211 [2023-11-26 11:45:43,415 INFO L226 Difference]: Without dead ends: 191 [2023-11-26 11:45:43,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:43,417 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 68 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:43,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 193 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-26 11:45:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 156. [2023-11-26 11:45:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 145 states have internal predecessors, (159), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:45:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2023-11-26 11:45:43,439 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 6 [2023-11-26 11:45:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:43,440 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2023-11-26 11:45:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2023-11-26 11:45:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:45:43,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:43,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:43,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:43,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1948900906, now seen corresponding path program 1 times [2023-11-26 11:45:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671059082] [2023-11-26 11:45:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:43,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:43,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147512772] [2023-11-26 11:45:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:43,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:43,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:43,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:43,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:43,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:43,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:43,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:43,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671059082] [2023-11-26 11:45:43,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:43,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147512772] [2023-11-26 11:45:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147512772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:43,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:43,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112268708] [2023-11-26 11:45:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:43,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:43,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:43,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:43,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:43,682 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:43,904 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2023-11-26 11:45:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:43,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-26 11:45:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:43,908 INFO L225 Difference]: With dead ends: 195 [2023-11-26 11:45:43,908 INFO L226 Difference]: Without dead ends: 187 [2023-11-26 11:45:43,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:43,911 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 53 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:43,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 185 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-26 11:45:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2023-11-26 11:45:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 108 states have (on average 1.5740740740740742) internal successors, (170), 155 states have internal predecessors, (170), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 190 transitions. [2023-11-26 11:45:43,944 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 190 transitions. Word has length 27 [2023-11-26 11:45:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:43,945 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 190 transitions. [2023-11-26 11:45:43,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 190 transitions. [2023-11-26 11:45:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 11:45:43,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:43,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:43,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:44,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:44,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:44,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:44,155 INFO L85 PathProgramCache]: Analyzing trace with hash 286386016, now seen corresponding path program 1 times [2023-11-26 11:45:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716280911] [2023-11-26 11:45:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:44,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:44,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082432291] [2023-11-26 11:45:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:44,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:44,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:44,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:44,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:44,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:44,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:44,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:44,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716280911] [2023-11-26 11:45:44,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:44,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082432291] [2023-11-26 11:45:44,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082432291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:44,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103083930] [2023-11-26 11:45:44,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:44,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:44,358 INFO L87 Difference]: Start difference. First operand 167 states and 190 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:44,528 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2023-11-26 11:45:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-26 11:45:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:44,533 INFO L225 Difference]: With dead ends: 183 [2023-11-26 11:45:44,533 INFO L226 Difference]: Without dead ends: 181 [2023-11-26 11:45:44,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:44,537 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 50 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:44,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 181 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:44,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-26 11:45:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 167. [2023-11-26 11:45:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 108 states have (on average 1.5555555555555556) internal successors, (168), 155 states have internal predecessors, (168), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2023-11-26 11:45:44,569 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 28 [2023-11-26 11:45:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:44,569 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2023-11-26 11:45:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2023-11-26 11:45:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:45:44,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:44,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:44,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:44,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:44,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:44,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash 288031980, now seen corresponding path program 1 times [2023-11-26 11:45:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057583883] [2023-11-26 11:45:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:44,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:44,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337857545] [2023-11-26 11:45:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:44,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:44,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:44,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:44,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:44,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:44,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:44,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:44,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057583883] [2023-11-26 11:45:44,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:44,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337857545] [2023-11-26 11:45:44,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337857545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:44,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:44,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520795612] [2023-11-26 11:45:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:44,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:44,950 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:45,079 INFO L93 Difference]: Finished difference Result 189 states and 199 transitions. [2023-11-26 11:45:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:45,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-11-26 11:45:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:45,082 INFO L225 Difference]: With dead ends: 189 [2023-11-26 11:45:45,082 INFO L226 Difference]: Without dead ends: 181 [2023-11-26 11:45:45,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:45,087 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 45 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:45,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 194 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-26 11:45:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 170. [2023-11-26 11:45:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 158 states have internal predecessors, (166), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2023-11-26 11:45:45,119 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 29 [2023-11-26 11:45:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:45,120 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2023-11-26 11:45:45,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2023-11-26 11:45:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 11:45:45,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:45,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:45,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:45,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:45:45,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:45,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:45,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1920828334, now seen corresponding path program 1 times [2023-11-26 11:45:45,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109381635] [2023-11-26 11:45:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:45,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:45,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:45,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820376944] [2023-11-26 11:45:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:45,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:45,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:45,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:45,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:45,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109381635] [2023-11-26 11:45:45,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820376944] [2023-11-26 11:45:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820376944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:45,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674199874] [2023-11-26 11:45:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:45,591 INFO L87 Difference]: Start difference. First operand 170 states and 186 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:45,770 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2023-11-26 11:45:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-26 11:45:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:45,773 INFO L225 Difference]: With dead ends: 181 [2023-11-26 11:45:45,774 INFO L226 Difference]: Without dead ends: 179 [2023-11-26 11:45:45,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:45,775 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 93 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:45,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 162 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-26 11:45:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 170. [2023-11-26 11:45:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.4774774774774775) internal successors, (164), 158 states have internal predecessors, (164), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 184 transitions. [2023-11-26 11:45:45,805 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 184 transitions. Word has length 31 [2023-11-26 11:45:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:45,806 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 184 transitions. [2023-11-26 11:45:45,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 184 transitions. [2023-11-26 11:45:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 11:45:45,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:45,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:45,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:45:46,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:46,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:46,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash 733907250, now seen corresponding path program 1 times [2023-11-26 11:45:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172115400] [2023-11-26 11:45:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:46,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749824557] [2023-11-26 11:45:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:46,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:46,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:46,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:45:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:46,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:46,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:46,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:46,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:46,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172115400] [2023-11-26 11:45:46,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749824557] [2023-11-26 11:45:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749824557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:46,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112504650] [2023-11-26 11:45:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:46,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:46,415 INFO L87 Difference]: Start difference. First operand 170 states and 184 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:46,599 INFO L93 Difference]: Finished difference Result 175 states and 185 transitions. [2023-11-26 11:45:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:46,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2023-11-26 11:45:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:46,602 INFO L225 Difference]: With dead ends: 175 [2023-11-26 11:45:46,602 INFO L226 Difference]: Without dead ends: 147 [2023-11-26 11:45:46,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:46,604 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 73 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:46,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 173 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:46,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-26 11:45:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-26 11:45:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 137 states have internal predecessors, (139), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2023-11-26 11:45:46,621 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 35 [2023-11-26 11:45:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:46,622 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2023-11-26 11:45:46,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2023-11-26 11:45:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:45:46,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:46,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:46,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:46,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:45:46,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:46,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash -132779018, now seen corresponding path program 1 times [2023-11-26 11:45:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079603944] [2023-11-26 11:45:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:46,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:46,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706933845] [2023-11-26 11:45:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:46,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:46,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:46,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:46,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:45:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:46,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:46,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:47,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:47,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079603944] [2023-11-26 11:45:47,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706933845] [2023-11-26 11:45:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706933845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:47,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:47,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:47,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467733907] [2023-11-26 11:45:47,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:47,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:47,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:47,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:47,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:47,182 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:47,326 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2023-11-26 11:45:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2023-11-26 11:45:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:47,329 INFO L225 Difference]: With dead ends: 147 [2023-11-26 11:45:47,329 INFO L226 Difference]: Without dead ends: 141 [2023-11-26 11:45:47,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:47,331 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 96 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:47,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 122 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-26 11:45:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-11-26 11:45:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 90 states have (on average 1.4777777777777779) internal successors, (133), 131 states have internal predecessors, (133), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2023-11-26 11:45:47,342 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 48 [2023-11-26 11:45:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:47,342 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2023-11-26 11:45:47,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2023-11-26 11:45:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:45:47,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:47,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:47,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:47,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:47,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:47,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash 178817848, now seen corresponding path program 1 times [2023-11-26 11:45:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393143055] [2023-11-26 11:45:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:47,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91968521] [2023-11-26 11:45:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:47,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:47,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:45:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:47,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:47,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:47,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:47,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393143055] [2023-11-26 11:45:47,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91968521] [2023-11-26 11:45:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91968521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:47,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:47,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:47,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678066519] [2023-11-26 11:45:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:47,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:47,899 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:47,995 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2023-11-26 11:45:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2023-11-26 11:45:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:48,001 INFO L225 Difference]: With dead ends: 144 [2023-11-26 11:45:48,001 INFO L226 Difference]: Without dead ends: 143 [2023-11-26 11:45:48,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:48,003 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:48,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-26 11:45:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-26 11:45:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 133 states have internal predecessors, (135), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2023-11-26 11:45:48,015 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 49 [2023-11-26 11:45:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:48,015 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2023-11-26 11:45:48,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2023-11-26 11:45:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:45:48,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:48,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:48,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:45:48,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:48,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash 45261274, now seen corresponding path program 1 times [2023-11-26 11:45:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232110897] [2023-11-26 11:45:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:48,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780523543] [2023-11-26 11:45:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:48,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:48,238 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:48,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:45:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:48,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:48,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:48,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:48,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:48,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232110897] [2023-11-26 11:45:48,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780523543] [2023-11-26 11:45:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780523543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:48,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455166372] [2023-11-26 11:45:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:48,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:48,453 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:48,504 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2023-11-26 11:45:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2023-11-26 11:45:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:48,506 INFO L225 Difference]: With dead ends: 143 [2023-11-26 11:45:48,506 INFO L226 Difference]: Without dead ends: 142 [2023-11-26 11:45:48,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:45:48,508 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 77 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:48,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 208 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-26 11:45:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-26 11:45:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 92 states have (on average 1.4565217391304348) internal successors, (134), 132 states have internal predecessors, (134), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2023-11-26 11:45:48,519 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 51 [2023-11-26 11:45:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:48,521 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2023-11-26 11:45:48,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2023-11-26 11:45:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:45:48,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:48,523 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:48,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:48,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:45:48,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:48,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1403099535, now seen corresponding path program 1 times [2023-11-26 11:45:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:48,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103379604] [2023-11-26 11:45:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:48,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266501146] [2023-11-26 11:45:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:48,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:48,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:48,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:45:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:48,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:48,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:48,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103379604] [2023-11-26 11:45:49,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266501146] [2023-11-26 11:45:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266501146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:49,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:49,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-26 11:45:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899272598] [2023-11-26 11:45:49,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:49,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:49,067 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:45:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:49,272 INFO L93 Difference]: Finished difference Result 404 states and 423 transitions. [2023-11-26 11:45:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:45:49,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2023-11-26 11:45:49,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:49,276 INFO L225 Difference]: With dead ends: 404 [2023-11-26 11:45:49,276 INFO L226 Difference]: Without dead ends: 357 [2023-11-26 11:45:49,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:45:49,277 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 235 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:49,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 772 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-26 11:45:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 253. [2023-11-26 11:45:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 190 states have (on average 1.563157894736842) internal successors, (297), 232 states have internal predecessors, (297), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 333 transitions. [2023-11-26 11:45:49,299 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 333 transitions. Word has length 52 [2023-11-26 11:45:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:49,299 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 333 transitions. [2023-11-26 11:45:49,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:45:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 333 transitions. [2023-11-26 11:45:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 11:45:49,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:49,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:49,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:49,501 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:49,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -241076335, now seen corresponding path program 1 times [2023-11-26 11:45:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883828681] [2023-11-26 11:45:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:49,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088913189] [2023-11-26 11:45:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:49,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:49,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:49,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:49,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:45:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:49,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:49,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:49,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:49,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883828681] [2023-11-26 11:45:49,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088913189] [2023-11-26 11:45:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088913189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:49,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455288694] [2023-11-26 11:45:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:49,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:49,677 INFO L87 Difference]: Start difference. First operand 253 states and 333 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:49,779 INFO L93 Difference]: Finished difference Result 253 states and 333 transitions. [2023-11-26 11:45:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2023-11-26 11:45:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:49,784 INFO L225 Difference]: With dead ends: 253 [2023-11-26 11:45:49,784 INFO L226 Difference]: Without dead ends: 244 [2023-11-26 11:45:49,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:49,786 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 134 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:49,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 119 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-26 11:45:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-11-26 11:45:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 190 states have (on average 1.4210526315789473) internal successors, (270), 223 states have internal predecessors, (270), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 306 transitions. [2023-11-26 11:45:49,812 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 306 transitions. Word has length 54 [2023-11-26 11:45:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:49,813 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 306 transitions. [2023-11-26 11:45:49,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 306 transitions. [2023-11-26 11:45:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:45:49,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:49,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:49,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:50,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:45:50,022 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:50,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1116568257, now seen corresponding path program 1 times [2023-11-26 11:45:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444414360] [2023-11-26 11:45:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:50,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853781963] [2023-11-26 11:45:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:50,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:50,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:50,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:45:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:50,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:50,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:50,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:50,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:50,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444414360] [2023-11-26 11:45:50,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:50,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853781963] [2023-11-26 11:45:50,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853781963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:50,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:50,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 11:45:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090681753] [2023-11-26 11:45:50,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:50,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:50,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:50,280 INFO L87 Difference]: Start difference. First operand 244 states and 306 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:45:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:50,474 INFO L93 Difference]: Finished difference Result 291 states and 343 transitions. [2023-11-26 11:45:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2023-11-26 11:45:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:50,477 INFO L225 Difference]: With dead ends: 291 [2023-11-26 11:45:50,477 INFO L226 Difference]: Without dead ends: 282 [2023-11-26 11:45:50,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:50,479 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 184 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:50,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 227 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-26 11:45:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 235. [2023-11-26 11:45:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 190 states have (on average 1.2789473684210526) internal successors, (243), 214 states have internal predecessors, (243), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2023-11-26 11:45:50,529 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 55 [2023-11-26 11:45:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:50,529 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2023-11-26 11:45:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:45:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2023-11-26 11:45:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:45:50,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:50,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:50,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:50,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:45:50,739 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:50,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -630108129, now seen corresponding path program 1 times [2023-11-26 11:45:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:50,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434866195] [2023-11-26 11:45:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:50,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585135422] [2023-11-26 11:45:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:50,759 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:50,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:45:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:50,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:50,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:45:50,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:45:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434866195] [2023-11-26 11:45:51,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585135422] [2023-11-26 11:45:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585135422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:51,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 11:45:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946854820] [2023-11-26 11:45:51,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:51,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:51,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:51,145 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:45:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:51,428 INFO L93 Difference]: Finished difference Result 324 states and 347 transitions. [2023-11-26 11:45:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2023-11-26 11:45:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:51,432 INFO L225 Difference]: With dead ends: 324 [2023-11-26 11:45:51,432 INFO L226 Difference]: Without dead ends: 322 [2023-11-26 11:45:51,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:45:51,433 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 247 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:51,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 337 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-26 11:45:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 258. [2023-11-26 11:45:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 211 states have (on average 1.2369668246445498) internal successors, (261), 235 states have internal predecessors, (261), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:45:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 301 transitions. [2023-11-26 11:45:51,456 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 301 transitions. Word has length 68 [2023-11-26 11:45:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:51,456 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 301 transitions. [2023-11-26 11:45:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:45:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 301 transitions. [2023-11-26 11:45:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:45:51,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:51,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:51,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:51,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:45:51,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:51,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash -953494685, now seen corresponding path program 1 times [2023-11-26 11:45:51,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:51,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887811875] [2023-11-26 11:45:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:51,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:51,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:51,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673854978] [2023-11-26 11:45:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:51,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:51,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:51,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:51,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:45:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:51,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:51,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:45:51,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:45:52,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887811875] [2023-11-26 11:45:52,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673854978] [2023-11-26 11:45:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673854978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:52,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 11:45:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374162242] [2023-11-26 11:45:52,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:52,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:52,042 INFO L87 Difference]: Start difference. First operand 258 states and 301 transitions. Second operand has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:45:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:52,408 INFO L93 Difference]: Finished difference Result 320 states and 351 transitions. [2023-11-26 11:45:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 75 [2023-11-26 11:45:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:52,412 INFO L225 Difference]: With dead ends: 320 [2023-11-26 11:45:52,412 INFO L226 Difference]: Without dead ends: 315 [2023-11-26 11:45:52,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:45:52,413 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 236 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:52,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 263 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-26 11:45:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 261. [2023-11-26 11:45:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 215 states have (on average 1.1906976744186046) internal successors, (256), 236 states have internal predecessors, (256), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:45:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 300 transitions. [2023-11-26 11:45:52,434 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 300 transitions. Word has length 75 [2023-11-26 11:45:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:52,435 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 300 transitions. [2023-11-26 11:45:52,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:45:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 300 transitions. [2023-11-26 11:45:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 11:45:52,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:52,436 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:52,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:52,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:52,642 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:52,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1480355867, now seen corresponding path program 1 times [2023-11-26 11:45:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47416805] [2023-11-26 11:45:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:52,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112117407] [2023-11-26 11:45:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:52,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:52,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:45:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:52,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:52,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:45:52,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:45:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47416805] [2023-11-26 11:45:53,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112117407] [2023-11-26 11:45:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112117407] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:53,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-26 11:45:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272148640] [2023-11-26 11:45:53,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:53,025 INFO L87 Difference]: Start difference. First operand 261 states and 300 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 8 states have internal predecessors, (107), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:45:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:53,300 INFO L93 Difference]: Finished difference Result 298 states and 337 transitions. [2023-11-26 11:45:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:53,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 8 states have internal predecessors, (107), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 77 [2023-11-26 11:45:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:53,303 INFO L225 Difference]: With dead ends: 298 [2023-11-26 11:45:53,303 INFO L226 Difference]: Without dead ends: 289 [2023-11-26 11:45:53,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:53,304 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 167 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:53,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 228 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-26 11:45:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 271. [2023-11-26 11:45:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 229 states have (on average 1.1135371179039302) internal successors, (255), 244 states have internal predecessors, (255), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 11:45:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 303 transitions. [2023-11-26 11:45:53,327 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 303 transitions. Word has length 77 [2023-11-26 11:45:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:53,328 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 303 transitions. [2023-11-26 11:45:53,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 8 states have internal predecessors, (107), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:45:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 303 transitions. [2023-11-26 11:45:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:45:53,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:53,330 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:53,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:53,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:45:53,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:53,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash -987810713, now seen corresponding path program 1 times [2023-11-26 11:45:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:53,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412337475] [2023-11-26 11:45:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:53,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080899381] [2023-11-26 11:45:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:53,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:53,552 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:53,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:45:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:53,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:45:53,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:45:53,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412337475] [2023-11-26 11:45:53,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080899381] [2023-11-26 11:45:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080899381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:53,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:53,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629313416] [2023-11-26 11:45:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:53,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:53,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:53,872 INFO L87 Difference]: Start difference. First operand 271 states and 303 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:45:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:54,012 INFO L93 Difference]: Finished difference Result 285 states and 319 transitions. [2023-11-26 11:45:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-26 11:45:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:54,014 INFO L225 Difference]: With dead ends: 285 [2023-11-26 11:45:54,015 INFO L226 Difference]: Without dead ends: 217 [2023-11-26 11:45:54,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:54,018 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 160 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:54,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 130 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:54,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-26 11:45:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-11-26 11:45:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 187 states have (on average 1.053475935828877) internal successors, (197), 194 states have internal predecessors, (197), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 233 transitions. [2023-11-26 11:45:54,039 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 233 transitions. Word has length 79 [2023-11-26 11:45:54,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:54,039 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 233 transitions. [2023-11-26 11:45:54,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:45:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 233 transitions. [2023-11-26 11:45:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 11:45:54,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:54,042 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2023-11-26 11:45:54,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:54,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:45:54,257 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:54,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1800995286, now seen corresponding path program 1 times [2023-11-26 11:45:54,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:54,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765607071] [2023-11-26 11:45:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:54,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:54,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192459464] [2023-11-26 11:45:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:54,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:54,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:54,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:54,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:45:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:54,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:54,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-26 11:45:54,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-26 11:45:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765607071] [2023-11-26 11:45:55,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192459464] [2023-11-26 11:45:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192459464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:55,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:55,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-26 11:45:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667517844] [2023-11-26 11:45:55,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:55,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:45:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:55,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:45:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=108, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:45:55,130 INFO L87 Difference]: Start difference. First operand 217 states and 233 transitions. Second operand has 14 states, 13 states have (on average 15.615384615384615) internal successors, (203), 14 states have internal predecessors, (203), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-26 11:45:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:55,612 INFO L93 Difference]: Finished difference Result 358 states and 386 transitions. [2023-11-26 11:45:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:45:55,613 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 15.615384615384615) internal successors, (203), 14 states have internal predecessors, (203), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 145 [2023-11-26 11:45:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:55,615 INFO L225 Difference]: With dead ends: 358 [2023-11-26 11:45:55,615 INFO L226 Difference]: Without dead ends: 357 [2023-11-26 11:45:55,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=240, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:45:55,617 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 130 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:55,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 368 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-26 11:45:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 307. [2023-11-26 11:45:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 270 states have (on average 1.0740740740740742) internal successors, (290), 277 states have internal predecessors, (290), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:45:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 340 transitions. [2023-11-26 11:45:55,645 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 340 transitions. Word has length 145 [2023-11-26 11:45:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:55,645 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 340 transitions. [2023-11-26 11:45:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 15.615384615384615) internal successors, (203), 14 states have internal predecessors, (203), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-26 11:45:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 340 transitions. [2023-11-26 11:45:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-26 11:45:55,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:55,649 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-11-26 11:45:55,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:55,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:55,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 168362967, now seen corresponding path program 2 times [2023-11-26 11:45:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327979609] [2023-11-26 11:45:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:55,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:55,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603968837] [2023-11-26 11:45:55,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:55,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:55,878 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:55,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:45:55,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:55,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:55,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:45:55,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-26 11:45:56,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-26 11:45:56,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327979609] [2023-11-26 11:45:56,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603968837] [2023-11-26 11:45:56,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603968837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:56,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:56,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-26 11:45:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026637120] [2023-11-26 11:45:56,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:56,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:45:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:45:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:45:56,909 INFO L87 Difference]: Start difference. First operand 307 states and 340 transitions. Second operand has 16 states, 15 states have (on average 15.933333333333334) internal successors, (239), 16 states have internal predecessors, (239), 8 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2023-11-26 11:45:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:57,534 INFO L93 Difference]: Finished difference Result 394 states and 429 transitions. [2023-11-26 11:45:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:45:57,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 15.933333333333334) internal successors, (239), 16 states have internal predecessors, (239), 8 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 173 [2023-11-26 11:45:57,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:57,538 INFO L225 Difference]: With dead ends: 394 [2023-11-26 11:45:57,538 INFO L226 Difference]: Without dead ends: 370 [2023-11-26 11:45:57,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=353, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:45:57,540 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 317 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:57,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 397 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:45:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-26 11:45:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 327. [2023-11-26 11:45:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 288 states have (on average 1.0729166666666667) internal successors, (309), 295 states have internal predecessors, (309), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:45:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 363 transitions. [2023-11-26 11:45:57,572 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 363 transitions. Word has length 173 [2023-11-26 11:45:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:57,576 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 363 transitions. [2023-11-26 11:45:57,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 15.933333333333334) internal successors, (239), 16 states have internal predecessors, (239), 8 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2023-11-26 11:45:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 363 transitions. [2023-11-26 11:45:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-26 11:45:57,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:57,580 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-26 11:45:57,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:57,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:57,788 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:57,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1823210940, now seen corresponding path program 2 times [2023-11-26 11:45:57,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:57,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864790473] [2023-11-26 11:45:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:57,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720105704] [2023-11-26 11:45:57,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:57,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:57,840 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:57,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:45:57,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:57,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:45:57,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-26 11:45:58,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-26 11:45:58,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864790473] [2023-11-26 11:45:58,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720105704] [2023-11-26 11:45:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720105704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:58,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2023-11-26 11:45:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628472532] [2023-11-26 11:45:58,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:45:58,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:45:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:45:58,767 INFO L87 Difference]: Start difference. First operand 327 states and 363 transitions. Second operand has 22 states, 21 states have (on average 13.666666666666666) internal successors, (287), 22 states have internal predecessors, (287), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-11-26 11:45:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:59,304 INFO L93 Difference]: Finished difference Result 534 states and 570 transitions. [2023-11-26 11:45:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-26 11:45:59,305 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 13.666666666666666) internal successors, (287), 22 states have internal predecessors, (287), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 196 [2023-11-26 11:45:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:59,309 INFO L225 Difference]: With dead ends: 534 [2023-11-26 11:45:59,309 INFO L226 Difference]: Without dead ends: 513 [2023-11-26 11:45:59,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2023-11-26 11:45:59,311 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 351 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:59,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 718 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-11-26 11:45:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 478. [2023-11-26 11:45:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 420 states have (on average 1.0738095238095238) internal successors, (451), 430 states have internal predecessors, (451), 40 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 11:45:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 531 transitions. [2023-11-26 11:45:59,344 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 531 transitions. Word has length 196 [2023-11-26 11:45:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:59,345 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 531 transitions. [2023-11-26 11:45:59,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 13.666666666666666) internal successors, (287), 22 states have internal predecessors, (287), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-11-26 11:45:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 531 transitions. [2023-11-26 11:45:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-26 11:45:59,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:59,348 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-26 11:45:59,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-26 11:45:59,560 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:45:59,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2140295468, now seen corresponding path program 2 times [2023-11-26 11:45:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:59,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517218296] [2023-11-26 11:45:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:59,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:59,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:59,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487176276] [2023-11-26 11:45:59,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:59,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:59,610 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:59,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:45:59,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:59,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:59,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:45:59,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-26 11:45:59,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-26 11:46:00,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:00,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517218296] [2023-11-26 11:46:00,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:00,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487176276] [2023-11-26 11:46:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487176276] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:00,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-26 11:46:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559970287] [2023-11-26 11:46:00,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:46:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:46:00,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:46:00,378 INFO L87 Difference]: Start difference. First operand 478 states and 531 transitions. Second operand has 12 states, 11 states have (on average 27.0) internal successors, (297), 12 states have internal predecessors, (297), 10 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-26 11:46:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:01,095 INFO L93 Difference]: Finished difference Result 529 states and 571 transitions. [2023-11-26 11:46:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:46:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 27.0) internal successors, (297), 12 states have internal predecessors, (297), 10 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 212 [2023-11-26 11:46:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:01,100 INFO L225 Difference]: With dead ends: 529 [2023-11-26 11:46:01,100 INFO L226 Difference]: Without dead ends: 527 [2023-11-26 11:46:01,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:46:01,101 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 336 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:01,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 863 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:46:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-26 11:46:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 501. [2023-11-26 11:46:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 441 states have (on average 1.0521541950113378) internal successors, (464), 451 states have internal predecessors, (464), 42 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-26 11:46:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 548 transitions. [2023-11-26 11:46:01,149 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 548 transitions. Word has length 212 [2023-11-26 11:46:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 548 transitions. [2023-11-26 11:46:01,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 27.0) internal successors, (297), 12 states have internal predecessors, (297), 10 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-26 11:46:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 548 transitions. [2023-11-26 11:46:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-26 11:46:01,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:01,154 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-26 11:46:01,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:01,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 11:46:01,368 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:46:01,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash -832737522, now seen corresponding path program 2 times [2023-11-26 11:46:01,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:01,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324210912] [2023-11-26 11:46:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:01,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:01,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:01,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336642987] [2023-11-26 11:46:01,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:01,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:01,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:01,393 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:01,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:46:01,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:01,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:01,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 11:46:01,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-26 11:46:02,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-26 11:46:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324210912] [2023-11-26 11:46:02,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336642987] [2023-11-26 11:46:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336642987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:02,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:02,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2023-11-26 11:46:02,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463752241] [2023-11-26 11:46:02,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:46:02,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:46:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:46:02,723 INFO L87 Difference]: Start difference. First operand 501 states and 548 transitions. Second operand has 16 states, 15 states have (on average 20.066666666666666) internal successors, (301), 16 states have internal predecessors, (301), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-11-26 11:46:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:03,873 INFO L93 Difference]: Finished difference Result 526 states and 570 transitions. [2023-11-26 11:46:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:46:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 20.066666666666666) internal successors, (301), 16 states have internal predecessors, (301), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 219 [2023-11-26 11:46:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:03,878 INFO L225 Difference]: With dead ends: 526 [2023-11-26 11:46:03,878 INFO L226 Difference]: Without dead ends: 496 [2023-11-26 11:46:03,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:46:03,879 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 302 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:03,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 743 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:46:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-26 11:46:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 481. [2023-11-26 11:46:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 423 states have (on average 1.037825059101655) internal successors, (439), 432 states have internal predecessors, (439), 40 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 11:46:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 519 transitions. [2023-11-26 11:46:03,916 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 519 transitions. Word has length 219 [2023-11-26 11:46:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:03,917 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 519 transitions. [2023-11-26 11:46:03,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 20.066666666666666) internal successors, (301), 16 states have internal predecessors, (301), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-11-26 11:46:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 519 transitions. [2023-11-26 11:46:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-26 11:46:03,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:03,923 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2023-11-26 11:46:03,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:04,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 11:46:04,135 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:46:04,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:04,136 INFO L85 PathProgramCache]: Analyzing trace with hash -842441714, now seen corresponding path program 2 times [2023-11-26 11:46:04,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:04,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536281452] [2023-11-26 11:46:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:04,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661559879] [2023-11-26 11:46:04,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:04,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:04,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:04,173 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:04,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:46:04,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:04,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:04,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:46:04,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2023-11-26 11:46:04,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2023-11-26 11:46:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536281452] [2023-11-26 11:46:05,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661559879] [2023-11-26 11:46:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661559879] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:05,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:05,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-26 11:46:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860509547] [2023-11-26 11:46:05,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:05,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:46:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:46:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:46:05,227 INFO L87 Difference]: Start difference. First operand 481 states and 519 transitions. Second operand has 10 states, 9 states have (on average 10.555555555555555) internal successors, (95), 10 states have internal predecessors, (95), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:46:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:05,403 INFO L93 Difference]: Finished difference Result 481 states and 519 transitions. [2023-11-26 11:46:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:46:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.555555555555555) internal successors, (95), 10 states have internal predecessors, (95), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 337 [2023-11-26 11:46:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:05,408 INFO L225 Difference]: With dead ends: 481 [2023-11-26 11:46:05,408 INFO L226 Difference]: Without dead ends: 480 [2023-11-26 11:46:05,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:46:05,409 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 162 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:05,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 206 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-11-26 11:46:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2023-11-26 11:46:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 423 states have (on average 1.0283687943262412) internal successors, (435), 431 states have internal predecessors, (435), 40 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 11:46:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 515 transitions. [2023-11-26 11:46:05,448 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 515 transitions. Word has length 337 [2023-11-26 11:46:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:05,449 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 515 transitions. [2023-11-26 11:46:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.555555555555555) internal successors, (95), 10 states have internal predecessors, (95), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:46:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 515 transitions. [2023-11-26 11:46:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-26 11:46:05,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:05,456 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1] [2023-11-26 11:46:05,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:05,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:05,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:46:05,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash -313171013, now seen corresponding path program 3 times [2023-11-26 11:46:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145505052] [2023-11-26 11:46:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:05,682 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416605522] [2023-11-26 11:46:05,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:05,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:46:05,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:46:05,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:05,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 11:46:05,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 126 proven. 176 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-11-26 11:46:06,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:14,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145505052] [2023-11-26 11:46:14,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416605522] [2023-11-26 11:46:14,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416605522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:14,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:46:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:46:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188667124] [2023-11-26 11:46:14,870 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:14,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:46:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:46:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:46:14,872 INFO L87 Difference]: Start difference. First operand 480 states and 515 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:46:15,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:15,676 INFO L93 Difference]: Finished difference Result 480 states and 515 transitions. [2023-11-26 11:46:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:46:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 365 [2023-11-26 11:46:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:15,681 INFO L225 Difference]: With dead ends: 480 [2023-11-26 11:46:15,681 INFO L226 Difference]: Without dead ends: 438 [2023-11-26 11:46:15,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:46:15,686 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 203 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:15,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 106 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:46:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-26 11:46:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2023-11-26 11:46:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 389 states have (on average 1.012853470437018) internal successors, (394), 393 states have internal predecessors, (394), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 11:46:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 462 transitions. [2023-11-26 11:46:15,755 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 462 transitions. Word has length 365 [2023-11-26 11:46:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:15,757 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 462 transitions. [2023-11-26 11:46:15,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:46:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 462 transitions. [2023-11-26 11:46:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-11-26 11:46:15,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:15,763 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2023-11-26 11:46:15,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:15,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:46:15,970 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:46:15,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1618360914, now seen corresponding path program 3 times [2023-11-26 11:46:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:15,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267085536] [2023-11-26 11:46:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:16,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:16,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187933263] [2023-11-26 11:46:16,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:16,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:16,024 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:16,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 11:46:16,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:46:16,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:16,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:46:16,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3390 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2023-11-26 11:46:16,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:16,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267085536] [2023-11-26 11:46:16,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187933263] [2023-11-26 11:46:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187933263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:16,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409026414] [2023-11-26 11:46:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:16,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:16,283 INFO L87 Difference]: Start difference. First operand 438 states and 462 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:46:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:16,359 INFO L93 Difference]: Finished difference Result 442 states and 465 transitions. [2023-11-26 11:46:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 484 [2023-11-26 11:46:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:16,364 INFO L225 Difference]: With dead ends: 442 [2023-11-26 11:46:16,364 INFO L226 Difference]: Without dead ends: 441 [2023-11-26 11:46:16,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:16,365 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:16,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 185 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-26 11:46:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2023-11-26 11:46:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 392 states have (on average 1.010204081632653) internal successors, (396), 395 states have internal predecessors, (396), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 11:46:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 464 transitions. [2023-11-26 11:46:16,415 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 464 transitions. Word has length 484 [2023-11-26 11:46:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:16,416 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 464 transitions. [2023-11-26 11:46:16,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:46:16,417 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 464 transitions. [2023-11-26 11:46:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-26 11:46:16,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:16,422 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2023-11-26 11:46:16,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:16,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:46:16,628 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-26 11:46:16,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1293114942, now seen corresponding path program 3 times [2023-11-26 11:46:16,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:16,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814505836] [2023-11-26 11:46:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:16,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:16,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673905636] [2023-11-26 11:46:16,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:16,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:16,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:16,661 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:16,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e797bd23-717d-4377-afc5-746a97dc78bd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:46:16,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 11:46:16,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:16,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 11:46:16,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 492 proven. 204 refuted. 0 times theorem prover too weak. 2934 trivial. 0 not checked. [2023-11-26 11:46:18,086 INFO L327 TraceCheckSpWp]: Computing backward predicates...