./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya --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 2b1a58ad3e10b615d95cc8c02ce2afb54c727e6977a5f6eabd49347a082a7a12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:23:36,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:23:36,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:23:36,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:23:36,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:23:36,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:23:36,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:23:36,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:23:36,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:23:36,656 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:23:36,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:23:36,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:23:36,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:23:36,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:23:36,659 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:23:36,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:23:36,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:23:36,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:23:36,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:23:36,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:23:36,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:23:36,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:23:36,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:23:36,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:23:36,664 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:23:36,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:23:36,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:23:36,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:23:36,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:23:36,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:23:36,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:23:36,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:23:36,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:23:36,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:23:36,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:23:36,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:23:36,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:23:36,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:23:36,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:23:36,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:23:36,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:23:36,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:23:36,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:23:36,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:23:36,670 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_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b1a58ad3e10b615d95cc8c02ce2afb54c727e6977a5f6eabd49347a082a7a12 [2023-11-29 01:23:36,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:23:36,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:23:36,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:23:36,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:23:36,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:23:36,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c [2023-11-29 01:23:39,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:23:39,864 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:23:39,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c [2023-11-29 01:23:39,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/data/85cace4c1/16391ae84e1d48b99973db72ea2edcde/FLAGe8d61517f [2023-11-29 01:23:39,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/data/85cace4c1/16391ae84e1d48b99973db72ea2edcde [2023-11-29 01:23:39,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:23:39,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:23:39,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:23:39,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:23:39,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:23:39,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:23:39" (1/1) ... [2023-11-29 01:23:39,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414e62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:39, skipping insertion in model container [2023-11-29 01:23:39,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:23:39" (1/1) ... [2023-11-29 01:23:39,911 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:23:40,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:23:40,054 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:23:40,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:23:40,087 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:23:40,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40 WrapperNode [2023-11-29 01:23:40,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:23:40,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:23:40,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:23:40,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:23:40,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,128 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-11-29 01:23:40,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:23:40,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:23:40,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:23:40,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:23:40,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,152 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]. [2023-11-29 01:23:40,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:23:40,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:23:40,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:23:40,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:23:40,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (1/1) ... [2023-11-29 01:23:40,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:23:40,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:40,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:23:40,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:23:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:23:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:23:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:23:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:23:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:23:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:23:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:23:40,282 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:23:40,284 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:23:40,577 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:23:40,601 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:23:40,602 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:23:40,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:23:40 BoogieIcfgContainer [2023-11-29 01:23:40,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:23:40,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:23:40,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:23:40,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:23:40,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:23:39" (1/3) ... [2023-11-29 01:23:40,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1f9b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:23:40, skipping insertion in model container [2023-11-29 01:23:40,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:40" (2/3) ... [2023-11-29 01:23:40,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1f9b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:23:40, skipping insertion in model container [2023-11-29 01:23:40,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:23:40" (3/3) ... [2023-11-29 01:23:40,612 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound100.c [2023-11-29 01:23:40,632 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:23:40,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-29 01:23:40,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:40,681 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;@ff2bdd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:40,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-29 01:23:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 57 states have (on average 1.8771929824561404) internal successors, (107), 99 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:23:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 01:23:40,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:40,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:40,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:40,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:40,699 INFO L85 PathProgramCache]: Analyzing trace with hash -639812028, now seen corresponding path program 1 times [2023-11-29 01:23:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705757697] [2023-11-29 01:23:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:40,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705757697] [2023-11-29 01:23:40,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:23:40,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025178440] [2023-11-29 01:23:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:40,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:40,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:23:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:40,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:23:40,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:23:40,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025178440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:40,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783690992] [2023-11-29 01:23:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:40,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:23:40,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:23:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:23:40,951 INFO L87 Difference]: Start difference. First operand has 108 states, 57 states have (on average 1.8771929824561404) internal successors, (107), 99 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:23:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:40,986 INFO L93 Difference]: Finished difference Result 214 states and 241 transitions. [2023-11-29 01:23:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:23:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-29 01:23:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:40,994 INFO L225 Difference]: With dead ends: 214 [2023-11-29 01:23:40,995 INFO L226 Difference]: Without dead ends: 105 [2023-11-29 01:23:40,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:23:41,001 INFO L413 NwaCegarLoop]: 113 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, 113 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 [2023-11-29 01:23:41,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:23:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-29 01:23:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-29 01:23:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 97 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:23:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2023-11-29 01:23:41,041 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 20 [2023-11-29 01:23:41,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:41,041 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2023-11-29 01:23:41,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:23:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2023-11-29 01:23:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 01:23:41,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:41,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:41,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:23:41,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:41,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1469837050, now seen corresponding path program 1 times [2023-11-29 01:23:41,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922074659] [2023-11-29 01:23:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:41,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:41,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715877678] [2023-11-29 01:23:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:41,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:41,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:41,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:41,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:23:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:41,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:23:41,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:41,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:41,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922074659] [2023-11-29 01:23:41,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715877678] [2023-11-29 01:23:41,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715877678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:41,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:23:41,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 01:23:41,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119217299] [2023-11-29 01:23:41,635 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:41,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:23:41,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:23:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:23:41,637 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:23:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:41,980 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2023-11-29 01:23:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:23:41,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-29 01:23:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:41,982 INFO L225 Difference]: With dead ends: 154 [2023-11-29 01:23:41,983 INFO L226 Difference]: Without dead ends: 145 [2023-11-29 01:23:41,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:23:41,985 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 307 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:41,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 201 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:23:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-29 01:23:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-11-29 01:23:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.705128205128205) internal successors, (133), 117 states have internal predecessors, (133), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 01:23:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2023-11-29 01:23:42,000 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 20 [2023-11-29 01:23:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:42,001 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2023-11-29 01:23:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:23:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2023-11-29 01:23:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:23:42,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:42,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:42,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:42,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:42,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1679691756, now seen corresponding path program 1 times [2023-11-29 01:23:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387631736] [2023-11-29 01:23:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:42,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:42,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349013573] [2023-11-29 01:23:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:42,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:42,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:42,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:23:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:42,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:23:42,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:42,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:42,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387631736] [2023-11-29 01:23:42,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349013573] [2023-11-29 01:23:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349013573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:42,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:42,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:23:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707269783] [2023-11-29 01:23:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:42,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:23:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:23:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:23:42,391 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:23:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:42,723 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2023-11-29 01:23:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:23:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-11-29 01:23:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:42,726 INFO L225 Difference]: With dead ends: 186 [2023-11-29 01:23:42,726 INFO L226 Difference]: Without dead ends: 168 [2023-11-29 01:23:42,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:23:42,728 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 180 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:42,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 200 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:23:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-29 01:23:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2023-11-29 01:23:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.6153846153846154) internal successors, (168), 141 states have internal predecessors, (168), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:23:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 184 transitions. [2023-11-29 01:23:42,742 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 184 transitions. Word has length 21 [2023-11-29 01:23:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:42,743 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 184 transitions. [2023-11-29 01:23:42,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:23:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 184 transitions. [2023-11-29 01:23:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 01:23:42,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:42,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:42,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:23:42,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:42,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:42,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 530836936, now seen corresponding path program 1 times [2023-11-29 01:23:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499204839] [2023-11-29 01:23:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:42,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:42,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464342935] [2023-11-29 01:23:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:42,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:42,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:42,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:42,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:23:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:43,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:23:43,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:43,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499204839] [2023-11-29 01:23:43,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464342935] [2023-11-29 01:23:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464342935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:43,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:23:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 01:23:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573892985] [2023-11-29 01:23:43,385 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:43,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:23:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:23:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:23:43,386 INFO L87 Difference]: Start difference. First operand 152 states and 184 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:23:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:43,616 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2023-11-29 01:23:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:23:43,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-11-29 01:23:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:43,619 INFO L225 Difference]: With dead ends: 163 [2023-11-29 01:23:43,619 INFO L226 Difference]: Without dead ends: 162 [2023-11-29 01:23:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:23:43,620 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 141 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:43,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 237 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:23:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-29 01:23:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2023-11-29 01:23:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.6057692307692308) internal successors, (167), 141 states have internal predecessors, (167), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:23:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2023-11-29 01:23:43,633 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 22 [2023-11-29 01:23:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:43,634 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2023-11-29 01:23:43,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:23:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2023-11-29 01:23:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:23:43,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:43,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:43,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:23:43,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:43,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:43,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash -723924114, now seen corresponding path program 1 times [2023-11-29 01:23:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204485531] [2023-11-29 01:23:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:43,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:43,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223374823] [2023-11-29 01:23:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:43,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:43,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:43,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:43,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:23:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:43,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:23:43,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:43,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:43,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204485531] [2023-11-29 01:23:43,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223374823] [2023-11-29 01:23:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223374823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:43,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:43,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777469270] [2023-11-29 01:23:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:43,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:43,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:43,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:43,919 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 01:23:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:44,327 INFO L93 Difference]: Finished difference Result 239 states and 275 transitions. [2023-11-29 01:23:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-29 01:23:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:44,329 INFO L225 Difference]: With dead ends: 239 [2023-11-29 01:23:44,329 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 01:23:44,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:44,330 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 115 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:44,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 116 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 01:23:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 196. [2023-11-29 01:23:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 147 states have (on average 1.6666666666666667) internal successors, (245), 184 states have internal predecessors, (245), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:23:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 263 transitions. [2023-11-29 01:23:44,345 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 263 transitions. Word has length 23 [2023-11-29 01:23:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:44,345 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 263 transitions. [2023-11-29 01:23:44,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 01:23:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 263 transitions. [2023-11-29 01:23:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 01:23:44,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:44,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:44,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:23:44,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:44,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:44,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash -966810998, now seen corresponding path program 1 times [2023-11-29 01:23:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:44,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758284386] [2023-11-29 01:23:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:44,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:44,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:44,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249627422] [2023-11-29 01:23:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:44,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:44,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:44,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:23:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:44,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:44,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:44,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:44,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:44,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758284386] [2023-11-29 01:23:44,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:44,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249627422] [2023-11-29 01:23:44,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249627422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:44,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:44,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512273670] [2023-11-29 01:23:44,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:44,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:44,624 INFO L87 Difference]: Start difference. First operand 196 states and 263 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 01:23:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:45,494 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2023-11-29 01:23:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-29 01:23:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:45,497 INFO L225 Difference]: With dead ends: 310 [2023-11-29 01:23:45,497 INFO L226 Difference]: Without dead ends: 309 [2023-11-29 01:23:45,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:45,498 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:45,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 167 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:23:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-29 01:23:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 219. [2023-11-29 01:23:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.650887573964497) internal successors, (279), 206 states have internal predecessors, (279), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 299 transitions. [2023-11-29 01:23:45,510 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 299 transitions. Word has length 24 [2023-11-29 01:23:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:45,510 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 299 transitions. [2023-11-29 01:23:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 01:23:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 299 transitions. [2023-11-29 01:23:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:23:45,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:45,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:45,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:23:45,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:45,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:45,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash 93630192, now seen corresponding path program 1 times [2023-11-29 01:23:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:45,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614926499] [2023-11-29 01:23:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:45,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:45,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095945736] [2023-11-29 01:23:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:45,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:45,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:23:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:45,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:45,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:45,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614926499] [2023-11-29 01:23:45,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095945736] [2023-11-29 01:23:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095945736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:45,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243686753] [2023-11-29 01:23:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:45,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:45,792 INFO L87 Difference]: Start difference. First operand 219 states and 299 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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) [2023-11-29 01:23:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:47,117 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2023-11-29 01:23:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-29 01:23:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:47,119 INFO L225 Difference]: With dead ends: 309 [2023-11-29 01:23:47,120 INFO L226 Difference]: Without dead ends: 308 [2023-11-29 01:23:47,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:47,121 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 170 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:23:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-29 01:23:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 219. [2023-11-29 01:23:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.6390532544378698) internal successors, (277), 206 states have internal predecessors, (277), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 297 transitions. [2023-11-29 01:23:47,130 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 297 transitions. Word has length 25 [2023-11-29 01:23:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:47,130 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 297 transitions. [2023-11-29 01:23:47,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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) [2023-11-29 01:23:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 297 transitions. [2023-11-29 01:23:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 01:23:47,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:47,131 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] [2023-11-29 01:23:47,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:23:47,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:47,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:47,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash 591387408, now seen corresponding path program 1 times [2023-11-29 01:23:47,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:47,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673032357] [2023-11-29 01:23:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:47,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608464367] [2023-11-29 01:23:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:47,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:47,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:47,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:47,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:23:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:47,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:23:47,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:47,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:47,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673032357] [2023-11-29 01:23:47,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:47,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608464367] [2023-11-29 01:23:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608464367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:23:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602635778] [2023-11-29 01:23:47,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:47,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:23:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:23:47,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:23:47,462 INFO L87 Difference]: Start difference. First operand 219 states and 297 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:47,711 INFO L93 Difference]: Finished difference Result 235 states and 302 transitions. [2023-11-29 01:23:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:23:47,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-29 01:23:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:47,713 INFO L225 Difference]: With dead ends: 235 [2023-11-29 01:23:47,713 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 01:23:47,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:23:47,714 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 164 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:47,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 227 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:23:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 01:23:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 219. [2023-11-29 01:23:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.6331360946745561) internal successors, (276), 206 states have internal predecessors, (276), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 296 transitions. [2023-11-29 01:23:47,726 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 296 transitions. Word has length 38 [2023-11-29 01:23:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:47,727 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 296 transitions. [2023-11-29 01:23:47,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 296 transitions. [2023-11-29 01:23:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:23:47,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:47,728 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] [2023-11-29 01:23:47,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:47,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:47,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:47,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1166531614, now seen corresponding path program 1 times [2023-11-29 01:23:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115405454] [2023-11-29 01:23:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:47,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:47,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765529229] [2023-11-29 01:23:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:47,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:47,944 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:47,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:23:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:47,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:23:47,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:48,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115405454] [2023-11-29 01:23:48,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765529229] [2023-11-29 01:23:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765529229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:48,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:23:48,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 01:23:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173400667] [2023-11-29 01:23:48,208 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:48,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:23:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:23:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:23:48,209 INFO L87 Difference]: Start difference. First operand 219 states and 296 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:48,900 INFO L93 Difference]: Finished difference Result 252 states and 345 transitions. [2023-11-29 01:23:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:23:48,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-29 01:23:48,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:48,903 INFO L225 Difference]: With dead ends: 252 [2023-11-29 01:23:48,903 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 01:23:48,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:23:48,904 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 159 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:48,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 130 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:23:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 01:23:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 210. [2023-11-29 01:23:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 165 states have (on average 1.5515151515151515) internal successors, (256), 197 states have internal predecessors, (256), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 276 transitions. [2023-11-29 01:23:48,915 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 276 transitions. Word has length 39 [2023-11-29 01:23:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:48,916 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 276 transitions. [2023-11-29 01:23:48,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 276 transitions. [2023-11-29 01:23:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:23:48,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:48,917 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] [2023-11-29 01:23:48,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:23:49,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:23:49,122 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:49,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1153140560, now seen corresponding path program 1 times [2023-11-29 01:23:49,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:49,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016483441] [2023-11-29 01:23:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:49,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:49,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650519882] [2023-11-29 01:23:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:49,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:49,134 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:49,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:23:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:49,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:23:49,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:49,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016483441] [2023-11-29 01:23:49,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650519882] [2023-11-29 01:23:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650519882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543092653] [2023-11-29 01:23:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:49,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:49,251 INFO L87 Difference]: Start difference. First operand 210 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:49,715 INFO L93 Difference]: Finished difference Result 240 states and 276 transitions. [2023-11-29 01:23:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:49,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-29 01:23:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:49,718 INFO L225 Difference]: With dead ends: 240 [2023-11-29 01:23:49,718 INFO L226 Difference]: Without dead ends: 236 [2023-11-29 01:23:49,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:23:49,719 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 202 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:49,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 88 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-29 01:23:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 207. [2023-11-29 01:23:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 194 states have internal predecessors, (248), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 268 transitions. [2023-11-29 01:23:49,730 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 268 transitions. Word has length 39 [2023-11-29 01:23:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:49,731 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 268 transitions. [2023-11-29 01:23:49,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 268 transitions. [2023-11-29 01:23:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:23:49,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:49,732 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] [2023-11-29 01:23:49,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:23:49,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:23:49,933 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:49,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1802741779, now seen corresponding path program 1 times [2023-11-29 01:23:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:49,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909982767] [2023-11-29 01:23:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:49,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:49,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840538062] [2023-11-29 01:23:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:49,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:49,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:49,942 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:49,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:23:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:49,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:23:49,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:50,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:50,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:50,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909982767] [2023-11-29 01:23:50,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840538062] [2023-11-29 01:23:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840538062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:50,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:23:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 01:23:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187773270] [2023-11-29 01:23:50,185 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:23:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:23:50,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:23:50,186 INFO L87 Difference]: Start difference. First operand 207 states and 268 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:50,924 INFO L93 Difference]: Finished difference Result 250 states and 291 transitions. [2023-11-29 01:23:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:23:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-11-29 01:23:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:50,927 INFO L225 Difference]: With dead ends: 250 [2023-11-29 01:23:50,927 INFO L226 Difference]: Without dead ends: 246 [2023-11-29 01:23:50,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:23:50,928 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 239 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:50,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 161 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:23:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-29 01:23:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 207. [2023-11-29 01:23:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.5061728395061729) internal successors, (244), 194 states have internal predecessors, (244), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2023-11-29 01:23:50,936 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 40 [2023-11-29 01:23:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:50,936 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2023-11-29 01:23:50,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2023-11-29 01:23:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:23:50,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:50,937 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] [2023-11-29 01:23:50,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:23:51,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1387619090, now seen corresponding path program 1 times [2023-11-29 01:23:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022938960] [2023-11-29 01:23:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:51,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15867129] [2023-11-29 01:23:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:51,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:51,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:51,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:51,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:23:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:51,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:51,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:51,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:51,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022938960] [2023-11-29 01:23:51,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15867129] [2023-11-29 01:23:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15867129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875427850] [2023-11-29 01:23:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:51,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:51,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:51,216 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:52,479 INFO L93 Difference]: Finished difference Result 295 states and 360 transitions. [2023-11-29 01:23:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:52,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-11-29 01:23:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:52,481 INFO L225 Difference]: With dead ends: 295 [2023-11-29 01:23:52,481 INFO L226 Difference]: Without dead ends: 294 [2023-11-29 01:23:52,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:52,482 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 64 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:52,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 193 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:23:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-29 01:23:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 219. [2023-11-29 01:23:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 174 states have (on average 1.5) internal successors, (261), 206 states have internal predecessors, (261), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:23:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2023-11-29 01:23:52,493 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 40 [2023-11-29 01:23:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:52,493 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2023-11-29 01:23:52,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2023-11-29 01:23:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 01:23:52,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:52,494 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] [2023-11-29 01:23:52,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:23:52,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:52,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:52,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash 464588800, now seen corresponding path program 1 times [2023-11-29 01:23:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:52,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893556369] [2023-11-29 01:23:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:52,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:52,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:52,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215455709] [2023-11-29 01:23:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:52,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:52,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:52,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:52,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:23:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:52,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:23:52,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:52,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:52,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893556369] [2023-11-29 01:23:52,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215455709] [2023-11-29 01:23:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215455709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:23:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759666975] [2023-11-29 01:23:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:52,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:23:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:23:52,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:23:52,847 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:54,291 INFO L93 Difference]: Finished difference Result 427 states and 547 transitions. [2023-11-29 01:23:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:23:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2023-11-29 01:23:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:54,295 INFO L225 Difference]: With dead ends: 427 [2023-11-29 01:23:54,295 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 01:23:54,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:23:54,296 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 340 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:54,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 90 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:23:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 01:23:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2023-11-29 01:23:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 270 states have (on average 1.5444444444444445) internal successors, (417), 302 states have internal predecessors, (417), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:23:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2023-11-29 01:23:54,317 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 41 [2023-11-29 01:23:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:54,317 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2023-11-29 01:23:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2023-11-29 01:23:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 01:23:54,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:54,319 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] [2023-11-29 01:23:54,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:23:54,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:54,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:54,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 50420416, now seen corresponding path program 1 times [2023-11-29 01:23:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:54,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337898298] [2023-11-29 01:23:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:54,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:54,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275070289] [2023-11-29 01:23:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:54,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:54,535 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:54,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:23:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:54,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:54,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:54,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337898298] [2023-11-29 01:23:54,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275070289] [2023-11-29 01:23:54,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275070289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:54,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:54,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:54,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942794522] [2023-11-29 01:23:54,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:54,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:54,627 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:55,063 INFO L93 Difference]: Finished difference Result 375 states and 494 transitions. [2023-11-29 01:23:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-29 01:23:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:55,066 INFO L225 Difference]: With dead ends: 375 [2023-11-29 01:23:55,066 INFO L226 Difference]: Without dead ends: 374 [2023-11-29 01:23:55,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:55,067 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 54 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:55,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 203 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-29 01:23:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 329. [2023-11-29 01:23:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 281 states have (on average 1.5338078291814947) internal successors, (431), 313 states have internal predecessors, (431), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:23:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 457 transitions. [2023-11-29 01:23:55,086 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 457 transitions. Word has length 41 [2023-11-29 01:23:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 457 transitions. [2023-11-29 01:23:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 457 transitions. [2023-11-29 01:23:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 01:23:55,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:55,087 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] [2023-11-29 01:23:55,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:23:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:55,288 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:55,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash 66518930, now seen corresponding path program 1 times [2023-11-29 01:23:55,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:55,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026941417] [2023-11-29 01:23:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:55,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:55,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:55,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374845667] [2023-11-29 01:23:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:55,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:55,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:55,299 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:55,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:23:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:55,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:55,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:55,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026941417] [2023-11-29 01:23:55,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374845667] [2023-11-29 01:23:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374845667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:55,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960941730] [2023-11-29 01:23:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:55,371 INFO L87 Difference]: Start difference. First operand 329 states and 457 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:55,903 INFO L93 Difference]: Finished difference Result 374 states and 492 transitions. [2023-11-29 01:23:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:55,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-29 01:23:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:55,905 INFO L225 Difference]: With dead ends: 374 [2023-11-29 01:23:55,906 INFO L226 Difference]: Without dead ends: 373 [2023-11-29 01:23:55,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:55,906 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:55,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 196 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:23:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-29 01:23:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 331. [2023-11-29 01:23:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 283 states have (on average 1.530035335689046) internal successors, (433), 315 states have internal predecessors, (433), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:23:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 459 transitions. [2023-11-29 01:23:55,926 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 459 transitions. Word has length 41 [2023-11-29 01:23:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:55,926 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 459 transitions. [2023-11-29 01:23:55,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 459 transitions. [2023-11-29 01:23:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 01:23:55,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:55,927 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] [2023-11-29 01:23:55,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:23:56,128 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:56,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1517351043, now seen corresponding path program 1 times [2023-11-29 01:23:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395523756] [2023-11-29 01:23:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:56,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:56,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876910509] [2023-11-29 01:23:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:56,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:56,138 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:56,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:23:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:56,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:23:56,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:56,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:56,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395523756] [2023-11-29 01:23:56,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876910509] [2023-11-29 01:23:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876910509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:56,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:56,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:23:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112388218] [2023-11-29 01:23:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:23:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:23:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:23:56,270 INFO L87 Difference]: Start difference. First operand 331 states and 459 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:56,707 INFO L93 Difference]: Finished difference Result 360 states and 493 transitions. [2023-11-29 01:23:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:23:56,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2023-11-29 01:23:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:56,710 INFO L225 Difference]: With dead ends: 360 [2023-11-29 01:23:56,710 INFO L226 Difference]: Without dead ends: 352 [2023-11-29 01:23:56,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:23:56,711 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 224 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:56,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 88 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-29 01:23:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 323. [2023-11-29 01:23:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 283 states have (on average 1.4452296819787986) internal successors, (409), 307 states have internal predecessors, (409), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:23:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 435 transitions. [2023-11-29 01:23:56,730 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 435 transitions. Word has length 42 [2023-11-29 01:23:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:56,731 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 435 transitions. [2023-11-29 01:23:56,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:23:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 435 transitions. [2023-11-29 01:23:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 01:23:56,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:56,732 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] [2023-11-29 01:23:56,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:23:56,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:23:56,932 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:56,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1563033013, now seen corresponding path program 1 times [2023-11-29 01:23:56,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912136151] [2023-11-29 01:23:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:56,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:56,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:56,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422836011] [2023-11-29 01:23:56,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:56,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:56,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:56,943 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:56,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:23:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:56,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:56,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:23:57,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:57,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912136151] [2023-11-29 01:23:57,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422836011] [2023-11-29 01:23:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422836011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:57,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:57,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:23:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196227900] [2023-11-29 01:23:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:57,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:57,029 INFO L87 Difference]: Start difference. First operand 323 states and 435 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:57,452 INFO L93 Difference]: Finished difference Result 357 states and 462 transitions. [2023-11-29 01:23:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:57,452 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), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-29 01:23:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:57,455 INFO L225 Difference]: With dead ends: 357 [2023-11-29 01:23:57,455 INFO L226 Difference]: Without dead ends: 356 [2023-11-29 01:23:57,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:57,456 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 43 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:57,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 170 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-29 01:23:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 325. [2023-11-29 01:23:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 285 states have (on average 1.4421052631578948) internal successors, (411), 309 states have internal predecessors, (411), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:23:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 437 transitions. [2023-11-29 01:23:57,475 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 437 transitions. Word has length 42 [2023-11-29 01:23:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:57,475 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 437 transitions. [2023-11-29 01:23:57,475 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), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:23:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 437 transitions. [2023-11-29 01:23:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 01:23:57,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:57,476 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] [2023-11-29 01:23:57,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:23:57,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:23:57,678 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:23:57,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash 352887974, now seen corresponding path program 1 times [2023-11-29 01:23:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:57,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007130978] [2023-11-29 01:23:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:57,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:57,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772415466] [2023-11-29 01:23:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:57,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:57,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:57,687 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:57,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:23:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:57,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:23:57,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:58,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007130978] [2023-11-29 01:24:01,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772415466] [2023-11-29 01:24:01,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772415466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:01,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 01:24:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478974950] [2023-11-29 01:24:01,334 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:24:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:01,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:24:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:24:01,335 INFO L87 Difference]: Start difference. First operand 325 states and 437 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:24:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:02,328 INFO L93 Difference]: Finished difference Result 453 states and 596 transitions. [2023-11-29 01:24:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:24:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2023-11-29 01:24:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:02,332 INFO L225 Difference]: With dead ends: 453 [2023-11-29 01:24:02,332 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 01:24:02,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:24:02,333 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 216 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:02,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 186 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:24:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 01:24:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 409. [2023-11-29 01:24:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 365 states have (on average 1.4328767123287671) internal successors, (523), 389 states have internal predecessors, (523), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-29 01:24:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 557 transitions. [2023-11-29 01:24:02,349 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 557 transitions. Word has length 42 [2023-11-29 01:24:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:02,349 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 557 transitions. [2023-11-29 01:24:02,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:24:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 557 transitions. [2023-11-29 01:24:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 01:24:02,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:02,350 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] [2023-11-29 01:24:02,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 01:24:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:24:02,551 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:24:02,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1945374644, now seen corresponding path program 1 times [2023-11-29 01:24:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122298588] [2023-11-29 01:24:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:02,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:02,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3188614] [2023-11-29 01:24:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:02,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:02,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:02,558 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:02,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:24:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:02,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:24:02,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:24:02,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:03,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122298588] [2023-11-29 01:24:03,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3188614] [2023-11-29 01:24:03,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3188614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:03,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:03,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 01:24:03,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002479739] [2023-11-29 01:24:03,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:03,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:24:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:24:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:24:03,846 INFO L87 Difference]: Start difference. First operand 409 states and 557 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:24:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:05,091 INFO L93 Difference]: Finished difference Result 821 states and 1132 transitions. [2023-11-29 01:24:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:24:05,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2023-11-29 01:24:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:05,094 INFO L225 Difference]: With dead ends: 821 [2023-11-29 01:24:05,094 INFO L226 Difference]: Without dead ends: 616 [2023-11-29 01:24:05,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:24:05,096 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 369 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:05,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 112 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:24:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-11-29 01:24:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 472. [2023-11-29 01:24:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 431 states have (on average 1.4385150812064966) internal successors, (620), 450 states have internal predecessors, (620), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 01:24:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 658 transitions. [2023-11-29 01:24:05,128 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 658 transitions. Word has length 43 [2023-11-29 01:24:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:05,129 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 658 transitions. [2023-11-29 01:24:05,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:24:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 658 transitions. [2023-11-29 01:24:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 01:24:05,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:05,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:05,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:24:05,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:05,330 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:24:05,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash -177071768, now seen corresponding path program 1 times [2023-11-29 01:24:05,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:05,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309972818] [2023-11-29 01:24:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:05,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:05,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894753605] [2023-11-29 01:24:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:05,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:05,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:05,338 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:05,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:24:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:05,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:24:05,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:24:05,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:21,358 WARN L293 SmtUtils]: Spent 1.16m on a formula simplification that was a NOOP. DAG size: 61 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:25:33,614 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:25:48,961 WARN L293 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:25:52,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309972818] [2023-11-29 01:25:52,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:52,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894753605] [2023-11-29 01:25:52,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894753605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:52,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:52,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 01:25:52,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116547295] [2023-11-29 01:25:52,232 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:52,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:25:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:25:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:25:52,233 INFO L87 Difference]: Start difference. First operand 472 states and 658 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:25:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:52,920 INFO L93 Difference]: Finished difference Result 514 states and 686 transitions. [2023-11-29 01:25:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:25:52,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-11-29 01:25:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:52,923 INFO L225 Difference]: With dead ends: 514 [2023-11-29 01:25:52,923 INFO L226 Difference]: Without dead ends: 512 [2023-11-29 01:25:52,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 83.2s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:25:52,924 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 302 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:52,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 154 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:25:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-29 01:25:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 453. [2023-11-29 01:25:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 413 states have (on average 1.4188861985472154) internal successors, (586), 432 states have internal predecessors, (586), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:25:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 622 transitions. [2023-11-29 01:25:52,954 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 622 transitions. Word has length 44 [2023-11-29 01:25:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:52,954 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 622 transitions. [2023-11-29 01:25:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:25:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 622 transitions. [2023-11-29 01:25:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:25:52,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:52,955 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] [2023-11-29 01:25:52,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:25:53,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:53,156 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:25:53,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1125736252, now seen corresponding path program 1 times [2023-11-29 01:25:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:53,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678256454] [2023-11-29 01:25:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:53,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:53,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:53,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202058166] [2023-11-29 01:25:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:53,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:53,165 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:53,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:25:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:53,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:25:53,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:25:53,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:25:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678256454] [2023-11-29 01:25:53,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202058166] [2023-11-29 01:25:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202058166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:53,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 01:25:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037140780] [2023-11-29 01:25:53,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:53,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:25:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:25:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:25:53,589 INFO L87 Difference]: Start difference. First operand 453 states and 622 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:25:59,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:26:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:00,521 INFO L93 Difference]: Finished difference Result 1039 states and 1376 transitions. [2023-11-29 01:26:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:26:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2023-11-29 01:26:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:00,527 INFO L225 Difference]: With dead ends: 1039 [2023-11-29 01:26:00,527 INFO L226 Difference]: Without dead ends: 1032 [2023-11-29 01:26:00,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:26:00,529 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1024 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:00,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 157 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 935 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 01:26:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-11-29 01:26:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 570. [2023-11-29 01:26:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 524 states have (on average 1.400763358778626) internal successors, (734), 543 states have internal predecessors, (734), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 01:26:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 782 transitions. [2023-11-29 01:26:00,564 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 782 transitions. Word has length 45 [2023-11-29 01:26:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:00,564 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 782 transitions. [2023-11-29 01:26:00,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:26:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 782 transitions. [2023-11-29 01:26:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:26:00,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:00,565 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] [2023-11-29 01:26:00,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:26:00,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:00,765 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:00,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1194257458, now seen corresponding path program 1 times [2023-11-29 01:26:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278200246] [2023-11-29 01:26:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:00,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817131329] [2023-11-29 01:26:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:00,774 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:00,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:26:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:00,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:26:00,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:01,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:03,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278200246] [2023-11-29 01:26:03,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817131329] [2023-11-29 01:26:03,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817131329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:03,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:03,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 01:26:03,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365876862] [2023-11-29 01:26:03,798 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:26:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:26:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:26:03,799 INFO L87 Difference]: Start difference. First operand 570 states and 782 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:04,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:04,710 INFO L93 Difference]: Finished difference Result 772 states and 1031 transitions. [2023-11-29 01:26:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:26:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2023-11-29 01:26:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:04,714 INFO L225 Difference]: With dead ends: 772 [2023-11-29 01:26:04,714 INFO L226 Difference]: Without dead ends: 769 [2023-11-29 01:26:04,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:26:04,715 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 256 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:04,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 179 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:26:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-11-29 01:26:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 663. [2023-11-29 01:26:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 612 states have (on average 1.3986928104575163) internal successors, (856), 631 states have internal predecessors, (856), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 01:26:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 914 transitions. [2023-11-29 01:26:04,767 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 914 transitions. Word has length 45 [2023-11-29 01:26:04,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:04,768 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 914 transitions. [2023-11-29 01:26:04,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 914 transitions. [2023-11-29 01:26:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 01:26:04,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:04,769 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] [2023-11-29 01:26:04,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:26:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:04,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:04,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash 499224870, now seen corresponding path program 1 times [2023-11-29 01:26:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106805009] [2023-11-29 01:26:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:04,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185373721] [2023-11-29 01:26:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:04,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:04,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:04,981 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:04,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:26:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:05,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:05,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:26:05,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:05,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106805009] [2023-11-29 01:26:05,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185373721] [2023-11-29 01:26:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185373721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:26:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703707427] [2023-11-29 01:26:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:26:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:26:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:26:05,076 INFO L87 Difference]: Start difference. First operand 663 states and 914 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:26:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:05,810 INFO L93 Difference]: Finished difference Result 692 states and 939 transitions. [2023-11-29 01:26:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:26:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-29 01:26:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:05,814 INFO L225 Difference]: With dead ends: 692 [2023-11-29 01:26:05,814 INFO L226 Difference]: Without dead ends: 691 [2023-11-29 01:26:05,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:26:05,815 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 27 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:05,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:26:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-29 01:26:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 683. [2023-11-29 01:26:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 632 states have (on average 1.3876582278481013) internal successors, (877), 651 states have internal predecessors, (877), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 01:26:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 935 transitions. [2023-11-29 01:26:05,854 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 935 transitions. Word has length 47 [2023-11-29 01:26:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:05,854 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 935 transitions. [2023-11-29 01:26:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:26:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 935 transitions. [2023-11-29 01:26:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 01:26:05,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:05,855 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] [2023-11-29 01:26:05,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:26:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:26:06,055 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:06,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2063309992, now seen corresponding path program 1 times [2023-11-29 01:26:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738302305] [2023-11-29 01:26:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:06,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:06,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908595567] [2023-11-29 01:26:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:06,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:06,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:06,065 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:06,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:26:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:06,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:26:06,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:07,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738302305] [2023-11-29 01:26:07,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908595567] [2023-11-29 01:26:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908595567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:07,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:26:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198873974] [2023-11-29 01:26:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:26:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:26:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:26:07,093 INFO L87 Difference]: Start difference. First operand 683 states and 935 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:26:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:08,532 INFO L93 Difference]: Finished difference Result 717 states and 973 transitions. [2023-11-29 01:26:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:26:08,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-29 01:26:08,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:08,535 INFO L225 Difference]: With dead ends: 717 [2023-11-29 01:26:08,535 INFO L226 Difference]: Without dead ends: 715 [2023-11-29 01:26:08,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:26:08,536 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 158 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:08,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 214 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:26:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-29 01:26:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 702. [2023-11-29 01:26:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 650 states have (on average 1.383076923076923) internal successors, (899), 669 states have internal predecessors, (899), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 01:26:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 959 transitions. [2023-11-29 01:26:08,598 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 959 transitions. Word has length 47 [2023-11-29 01:26:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:08,598 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 959 transitions. [2023-11-29 01:26:08,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:26:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 959 transitions. [2023-11-29 01:26:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 01:26:08,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:08,599 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] [2023-11-29 01:26:08,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:08,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:26:08,800 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:08,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1703898071, now seen corresponding path program 1 times [2023-11-29 01:26:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:08,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261587607] [2023-11-29 01:26:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:08,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:08,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595708811] [2023-11-29 01:26:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:08,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:08,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:08,811 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:08,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:26:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:08,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:08,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:26:08,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:08,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261587607] [2023-11-29 01:26:08,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595708811] [2023-11-29 01:26:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595708811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:08,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:08,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:26:08,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995638836] [2023-11-29 01:26:08,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:08,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:26:08,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:08,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:26:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:26:08,919 INFO L87 Difference]: Start difference. First operand 702 states and 959 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:26:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:09,512 INFO L93 Difference]: Finished difference Result 710 states and 961 transitions. [2023-11-29 01:26:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:26:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-11-29 01:26:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:09,516 INFO L225 Difference]: With dead ends: 710 [2023-11-29 01:26:09,516 INFO L226 Difference]: Without dead ends: 709 [2023-11-29 01:26:09,516 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 [2023-11-29 01:26:09,516 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 25 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:09,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 152 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:26:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-11-29 01:26:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 703. [2023-11-29 01:26:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 651 states have (on average 1.380952380952381) internal successors, (899), 670 states have internal predecessors, (899), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 01:26:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 959 transitions. [2023-11-29 01:26:09,574 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 959 transitions. Word has length 48 [2023-11-29 01:26:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 959 transitions. [2023-11-29 01:26:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:26:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 959 transitions. [2023-11-29 01:26:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 01:26:09,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:09,575 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] [2023-11-29 01:26:09,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:09,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:26:09,780 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:09,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1526397755, now seen corresponding path program 1 times [2023-11-29 01:26:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894090880] [2023-11-29 01:26:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:09,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:09,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43722179] [2023-11-29 01:26:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:09,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:09,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:09,789 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:09,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:26:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:09,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:26:09,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:10,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894090880] [2023-11-29 01:26:12,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43722179] [2023-11-29 01:26:12,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43722179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:12,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:12,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 01:26:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811415399] [2023-11-29 01:26:12,005 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:26:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:26:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:26:12,006 INFO L87 Difference]: Start difference. First operand 703 states and 959 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:14,812 INFO L93 Difference]: Finished difference Result 901 states and 1206 transitions. [2023-11-29 01:26:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:26:14,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2023-11-29 01:26:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:14,816 INFO L225 Difference]: With dead ends: 901 [2023-11-29 01:26:14,816 INFO L226 Difference]: Without dead ends: 899 [2023-11-29 01:26:14,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:26:14,817 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 214 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:14,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 144 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:26:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2023-11-29 01:26:14,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 803. [2023-11-29 01:26:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 746 states have (on average 1.3699731903485255) internal successors, (1022), 765 states have internal predecessors, (1022), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 01:26:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1092 transitions. [2023-11-29 01:26:14,869 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1092 transitions. Word has length 48 [2023-11-29 01:26:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:14,869 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1092 transitions. [2023-11-29 01:26:14,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1092 transitions. [2023-11-29 01:26:14,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 01:26:14,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:14,870 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:14,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:15,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:26:15,070 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:15,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 461899746, now seen corresponding path program 1 times [2023-11-29 01:26:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859593010] [2023-11-29 01:26:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:15,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:15,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651778654] [2023-11-29 01:26:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:15,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:15,077 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:26:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:15,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:26:15,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:15,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859593010] [2023-11-29 01:26:16,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651778654] [2023-11-29 01:26:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651778654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:16,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 01:26:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976584581] [2023-11-29 01:26:16,914 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:26:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:26:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:26:16,915 INFO L87 Difference]: Start difference. First operand 803 states and 1092 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:26:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:18,202 INFO L93 Difference]: Finished difference Result 1243 states and 1708 transitions. [2023-11-29 01:26:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:26:18,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2023-11-29 01:26:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:18,206 INFO L225 Difference]: With dead ends: 1243 [2023-11-29 01:26:18,206 INFO L226 Difference]: Without dead ends: 804 [2023-11-29 01:26:18,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:26:18,207 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 128 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:18,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 222 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:26:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-11-29 01:26:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 797. [2023-11-29 01:26:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 740 states have (on average 1.3689189189189188) internal successors, (1013), 759 states have internal predecessors, (1013), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 01:26:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1083 transitions. [2023-11-29 01:26:18,266 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1083 transitions. Word has length 48 [2023-11-29 01:26:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:18,266 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1083 transitions. [2023-11-29 01:26:18,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:26:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1083 transitions. [2023-11-29 01:26:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 01:26:18,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:18,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:18,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:18,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:26:18,468 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:18,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 73690207, now seen corresponding path program 1 times [2023-11-29 01:26:18,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:18,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627168464] [2023-11-29 01:26:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:18,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260250389] [2023-11-29 01:26:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:18,477 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:18,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:26:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:18,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:26:18,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:18,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:19,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627168464] [2023-11-29 01:26:19,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260250389] [2023-11-29 01:26:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260250389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:19,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:19,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 01:26:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772409670] [2023-11-29 01:26:19,074 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:26:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:26:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:26:19,075 INFO L87 Difference]: Start difference. First operand 797 states and 1083 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:26:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:19,918 INFO L93 Difference]: Finished difference Result 806 states and 1091 transitions. [2023-11-29 01:26:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:26:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2023-11-29 01:26:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:19,922 INFO L225 Difference]: With dead ends: 806 [2023-11-29 01:26:19,922 INFO L226 Difference]: Without dead ends: 805 [2023-11-29 01:26:19,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:26:19,923 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 260 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:19,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 201 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:26:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-29 01:26:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 797. [2023-11-29 01:26:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 740 states have (on average 1.3675675675675676) internal successors, (1012), 759 states have internal predecessors, (1012), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 01:26:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1082 transitions. [2023-11-29 01:26:19,962 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1082 transitions. Word has length 49 [2023-11-29 01:26:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:19,962 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1082 transitions. [2023-11-29 01:26:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:26:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1082 transitions. [2023-11-29 01:26:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 01:26:19,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:19,962 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] [2023-11-29 01:26:19,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:20,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:26:20,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:20,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:20,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1063504981, now seen corresponding path program 1 times [2023-11-29 01:26:20,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5365875] [2023-11-29 01:26:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:20,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:20,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338016540] [2023-11-29 01:26:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:20,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:20,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:20,171 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:20,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:26:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:20,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:26:20,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:20,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5365875] [2023-11-29 01:26:20,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:20,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338016540] [2023-11-29 01:26:20,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338016540] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:26:20,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:26:20,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2023-11-29 01:26:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925933198] [2023-11-29 01:26:20,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:20,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:26:20,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:26:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:26:20,594 INFO L87 Difference]: Start difference. First operand 797 states and 1082 transitions. Second operand has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:26:21,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:21,216 INFO L93 Difference]: Finished difference Result 930 states and 1276 transitions. [2023-11-29 01:26:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:26:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 50 [2023-11-29 01:26:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:21,220 INFO L225 Difference]: With dead ends: 930 [2023-11-29 01:26:21,220 INFO L226 Difference]: Without dead ends: 914 [2023-11-29 01:26:21,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:26:21,221 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 205 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:21,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 100 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:26:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-11-29 01:26:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 677. [2023-11-29 01:26:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 630 states have (on average 1.2984126984126985) internal successors, (818), 645 states have internal predecessors, (818), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 01:26:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 876 transitions. [2023-11-29 01:26:21,259 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 876 transitions. Word has length 50 [2023-11-29 01:26:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:21,259 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 876 transitions. [2023-11-29 01:26:21,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:26:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 876 transitions. [2023-11-29 01:26:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 01:26:21,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:21,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:21,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:21,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:26:21,460 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:21,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash 173931309, now seen corresponding path program 1 times [2023-11-29 01:26:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091954408] [2023-11-29 01:26:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:21,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:21,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857351357] [2023-11-29 01:26:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:21,467 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:21,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:26:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:21,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:26:21,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:21,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091954408] [2023-11-29 01:26:24,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857351357] [2023-11-29 01:26:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857351357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:24,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 01:26:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283866301] [2023-11-29 01:26:24,315 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:26:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:26:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:26:24,316 INFO L87 Difference]: Start difference. First operand 677 states and 876 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:24,645 INFO L93 Difference]: Finished difference Result 745 states and 965 transitions. [2023-11-29 01:26:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:26:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2023-11-29 01:26:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:24,649 INFO L225 Difference]: With dead ends: 745 [2023-11-29 01:26:24,649 INFO L226 Difference]: Without dead ends: 742 [2023-11-29 01:26:24,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:26:24,650 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:24,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 66 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:26:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-11-29 01:26:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 419. [2023-11-29 01:26:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 386 states have (on average 1.2487046632124352) internal successors, (482), 398 states have internal predecessors, (482), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:26:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 518 transitions. [2023-11-29 01:26:24,679 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 518 transitions. Word has length 52 [2023-11-29 01:26:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:24,680 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 518 transitions. [2023-11-29 01:26:24,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 518 transitions. [2023-11-29 01:26:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:26:24,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:24,680 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] [2023-11-29 01:26:24,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 01:26:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:24,881 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:24,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash -355734865, now seen corresponding path program 1 times [2023-11-29 01:26:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:24,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084230439] [2023-11-29 01:26:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:24,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:24,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861049604] [2023-11-29 01:26:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:24,888 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:24,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:26:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:24,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:26:24,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:25,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084230439] [2023-11-29 01:26:26,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861049604] [2023-11-29 01:26:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861049604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:26,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:26,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 01:26:26,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573056927] [2023-11-29 01:26:26,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:26,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:26,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:26:26,505 INFO L87 Difference]: Start difference. First operand 419 states and 518 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:27,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:27,959 INFO L93 Difference]: Finished difference Result 607 states and 756 transitions. [2023-11-29 01:26:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:26:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2023-11-29 01:26:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:27,962 INFO L225 Difference]: With dead ends: 607 [2023-11-29 01:26:27,962 INFO L226 Difference]: Without dead ends: 603 [2023-11-29 01:26:27,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:26:27,963 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 246 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:27,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 72 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:26:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-11-29 01:26:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 317. [2023-11-29 01:26:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 293 states have (on average 1.1843003412969284) internal successors, (347), 301 states have internal predecessors, (347), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:26:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 373 transitions. [2023-11-29 01:26:27,984 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 373 transitions. Word has length 54 [2023-11-29 01:26:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:27,984 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 373 transitions. [2023-11-29 01:26:27,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:26:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 373 transitions. [2023-11-29 01:26:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:26:27,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:27,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:27,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:26:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:28,185 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:28,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1857121131, now seen corresponding path program 1 times [2023-11-29 01:26:28,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940496095] [2023-11-29 01:26:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:28,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699603060] [2023-11-29 01:26:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:28,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:28,193 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:28,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:26:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:28,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:26:28,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:28,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:28,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:28,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940496095] [2023-11-29 01:26:28,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699603060] [2023-11-29 01:26:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699603060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:28,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 01:26:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041395319] [2023-11-29 01:26:28,961 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:26:28,962 INFO L87 Difference]: Start difference. First operand 317 states and 373 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:26:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:29,884 INFO L93 Difference]: Finished difference Result 340 states and 400 transitions. [2023-11-29 01:26:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:26:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-11-29 01:26:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:29,886 INFO L225 Difference]: With dead ends: 340 [2023-11-29 01:26:29,886 INFO L226 Difference]: Without dead ends: 339 [2023-11-29 01:26:29,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:26:29,887 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 227 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:29,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 136 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:26:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-29 01:26:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 317. [2023-11-29 01:26:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 293 states have (on average 1.1843003412969284) internal successors, (347), 301 states have internal predecessors, (347), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:26:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 373 transitions. [2023-11-29 01:26:29,912 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 373 transitions. Word has length 55 [2023-11-29 01:26:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:29,912 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 373 transitions. [2023-11-29 01:26:29,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:26:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 373 transitions. [2023-11-29 01:26:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 01:26:29,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:29,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:29,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 01:26:30,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 01:26:30,114 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:30,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1624641456, now seen corresponding path program 1 times [2023-11-29 01:26:30,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:30,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689635433] [2023-11-29 01:26:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:30,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553302323] [2023-11-29 01:26:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:30,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:30,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:30,122 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:30,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:26:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:30,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:26:30,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:26:30,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:30,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689635433] [2023-11-29 01:26:30,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:30,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553302323] [2023-11-29 01:26:30,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553302323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:30,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:26:30,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167883599] [2023-11-29 01:26:30,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:30,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:26:30,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:30,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:26:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:26:30,897 INFO L87 Difference]: Start difference. First operand 317 states and 373 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:26:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:33,451 INFO L93 Difference]: Finished difference Result 667 states and 785 transitions. [2023-11-29 01:26:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:26:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2023-11-29 01:26:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:33,454 INFO L225 Difference]: With dead ends: 667 [2023-11-29 01:26:33,454 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 01:26:33,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:26:33,455 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 243 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:33,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 247 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:26:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 01:26:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 437. [2023-11-29 01:26:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 408 states have (on average 1.1838235294117647) internal successors, (483), 416 states have internal predecessors, (483), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:26:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 519 transitions. [2023-11-29 01:26:33,493 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 519 transitions. Word has length 61 [2023-11-29 01:26:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:33,493 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 519 transitions. [2023-11-29 01:26:33,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:26:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 519 transitions. [2023-11-29 01:26:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:26:33,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:33,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:33,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:26:33,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:26:33,694 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:33,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1159623804, now seen corresponding path program 1 times [2023-11-29 01:26:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:33,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075019933] [2023-11-29 01:26:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:33,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477407516] [2023-11-29 01:26:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:33,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:33,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:33,702 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:33,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:26:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:33,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:33,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:26:33,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:26:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075019933] [2023-11-29 01:26:33,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477407516] [2023-11-29 01:26:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477407516] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:26:33,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:26:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 01:26:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500372627] [2023-11-29 01:26:33,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:26:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:26:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:26:33,847 INFO L87 Difference]: Start difference. First operand 437 states and 519 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 5 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 01:26:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:35,037 INFO L93 Difference]: Finished difference Result 1008 states and 1198 transitions. [2023-11-29 01:26:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:26:35,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 5 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 62 [2023-11-29 01:26:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:35,042 INFO L225 Difference]: With dead ends: 1008 [2023-11-29 01:26:35,042 INFO L226 Difference]: Without dead ends: 1007 [2023-11-29 01:26:35,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:26:35,043 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 285 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:35,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 172 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:26:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-11-29 01:26:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 979. [2023-11-29 01:26:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 933 states have (on average 1.1993569131832797) internal successors, (1119), 941 states have internal predecessors, (1119), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 01:26:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1189 transitions. [2023-11-29 01:26:35,116 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1189 transitions. Word has length 62 [2023-11-29 01:26:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:35,116 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1189 transitions. [2023-11-29 01:26:35,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 5 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 01:26:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1189 transitions. [2023-11-29 01:26:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:26:35,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:35,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:35,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 01:26:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:35,318 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:35,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash -413925631, now seen corresponding path program 1 times [2023-11-29 01:26:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144572038] [2023-11-29 01:26:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:35,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:35,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315174575] [2023-11-29 01:26:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:35,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:35,325 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:35,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:26:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:35,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:35,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:26:35,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:35,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:35,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144572038] [2023-11-29 01:26:35,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:35,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315174575] [2023-11-29 01:26:35,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315174575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:35,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:35,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:26:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499120119] [2023-11-29 01:26:35,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:35,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:35,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:35,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:35,431 INFO L87 Difference]: Start difference. First operand 979 states and 1189 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2023-11-29 01:26:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:35,762 INFO L93 Difference]: Finished difference Result 1515 states and 1866 transitions. [2023-11-29 01:26:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 65 [2023-11-29 01:26:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:35,768 INFO L225 Difference]: With dead ends: 1515 [2023-11-29 01:26:35,768 INFO L226 Difference]: Without dead ends: 1069 [2023-11-29 01:26:35,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:35,769 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:35,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 100 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:26:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-11-29 01:26:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1051. [2023-11-29 01:26:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1000 states have (on average 1.199) internal successors, (1199), 1008 states have internal predecessors, (1199), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 01:26:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1279 transitions. [2023-11-29 01:26:35,850 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1279 transitions. Word has length 65 [2023-11-29 01:26:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:35,850 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1279 transitions. [2023-11-29 01:26:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2023-11-29 01:26:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1279 transitions. [2023-11-29 01:26:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:26:35,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:35,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:35,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:26:36,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:36,052 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:36,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:36,052 INFO L85 PathProgramCache]: Analyzing trace with hash -445846490, now seen corresponding path program 1 times [2023-11-29 01:26:36,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:36,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804986138] [2023-11-29 01:26:36,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:36,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:36,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:36,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628362102] [2023-11-29 01:26:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:36,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:36,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:36,060 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:36,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:26:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:36,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:26:36,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:26:36,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:36,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804986138] [2023-11-29 01:26:36,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628362102] [2023-11-29 01:26:36,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628362102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:36,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:36,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:26:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657641517] [2023-11-29 01:26:36,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:36,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:26:36,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:26:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:26:36,188 INFO L87 Difference]: Start difference. First operand 1051 states and 1279 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-29 01:26:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:36,618 INFO L93 Difference]: Finished difference Result 1610 states and 1973 transitions. [2023-11-29 01:26:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:26:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 66 [2023-11-29 01:26:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:36,624 INFO L225 Difference]: With dead ends: 1610 [2023-11-29 01:26:36,624 INFO L226 Difference]: Without dead ends: 1099 [2023-11-29 01:26:36,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:26:36,625 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:36,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 147 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:26:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-11-29 01:26:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1048. [2023-11-29 01:26:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 998 states have (on average 1.1973947895791583) internal successors, (1195), 1006 states have internal predecessors, (1195), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 01:26:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1273 transitions. [2023-11-29 01:26:36,706 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1273 transitions. Word has length 66 [2023-11-29 01:26:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:36,707 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1273 transitions. [2023-11-29 01:26:36,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-29 01:26:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1273 transitions. [2023-11-29 01:26:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 01:26:36,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:36,708 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:36,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 01:26:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 01:26:36,908 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:26:36,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash -12856274, now seen corresponding path program 2 times [2023-11-29 01:26:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:36,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491132226] [2023-11-29 01:26:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:36,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:26:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955956811] [2023-11-29 01:26:36,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:26:36,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:36,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:36,915 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:36,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 01:26:36,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:26:36,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:36,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:26:36,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:26:37,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:03,492 WARN L293 SmtUtils]: Spent 12.22s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:27:11,537 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:27:39,798 WARN L293 SmtUtils]: Spent 7.18s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:28:22,097 WARN L293 SmtUtils]: Spent 7.90s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:29:44,367 WARN L293 SmtUtils]: Spent 8.70s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:29:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491132226] [2023-11-29 01:29:47,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955956811] [2023-11-29 01:29:47,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955956811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:29:47,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:29:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 01:29:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744902193] [2023-11-29 01:29:47,811 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:29:47,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:29:47,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:29:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=721, Unknown=8, NotChecked=0, Total=930 [2023-11-29 01:29:47,813 INFO L87 Difference]: Start difference. First operand 1048 states and 1273 transitions. Second operand has 17 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:29:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:48,956 INFO L93 Difference]: Finished difference Result 1110 states and 1343 transitions. [2023-11-29 01:29:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:29:48,956 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67 [2023-11-29 01:29:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:48,960 INFO L225 Difference]: With dead ends: 1110 [2023-11-29 01:29:48,960 INFO L226 Difference]: Without dead ends: 1109 [2023-11-29 01:29:48,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 71.1s TimeCoverageRelationStatistics Valid=414, Invalid=1300, Unknown=8, NotChecked=0, Total=1722 [2023-11-29 01:29:48,961 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 242 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:48,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 215 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:29:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-11-29 01:29:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1072. [2023-11-29 01:29:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1021 states have (on average 1.1939275220372183) internal successors, (1219), 1029 states have internal predecessors, (1219), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 01:29:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1299 transitions. [2023-11-29 01:29:49,045 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1299 transitions. Word has length 67 [2023-11-29 01:29:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:29:49,045 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1299 transitions. [2023-11-29 01:29:49,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:29:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1299 transitions. [2023-11-29 01:29:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 01:29:49,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:29:49,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:29:49,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 01:29:49,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:29:49,246 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:29:49,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1725613031, now seen corresponding path program 1 times [2023-11-29 01:29:49,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:49,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612227415] [2023-11-29 01:29:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:49,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325885297] [2023-11-29 01:29:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:49,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:49,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:49,254 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:49,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 01:29:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:29:49,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:29:49,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:29:49,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:29:49,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:49,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612227415] [2023-11-29 01:29:49,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:49,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325885297] [2023-11-29 01:29:49,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325885297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:29:49,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:29:49,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 01:29:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342801801] [2023-11-29 01:29:49,894 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:29:49,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:29:49,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:29:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:29:49,895 INFO L87 Difference]: Start difference. First operand 1072 states and 1299 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:29:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:51,213 INFO L93 Difference]: Finished difference Result 1231 states and 1482 transitions. [2023-11-29 01:29:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:29:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 68 [2023-11-29 01:29:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:51,220 INFO L225 Difference]: With dead ends: 1231 [2023-11-29 01:29:51,221 INFO L226 Difference]: Without dead ends: 1227 [2023-11-29 01:29:51,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:29:51,222 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 277 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:51,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 261 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:29:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-11-29 01:29:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1169. [2023-11-29 01:29:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1114 states have (on average 1.1921005385996408) internal successors, (1328), 1122 states have internal predecessors, (1328), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 01:29:51,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1416 transitions. [2023-11-29 01:29:51,383 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1416 transitions. Word has length 68 [2023-11-29 01:29:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:29:51,384 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1416 transitions. [2023-11-29 01:29:51,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:29:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1416 transitions. [2023-11-29 01:29:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 01:29:51,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:29:51,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:29:51,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 01:29:51,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:29:51,585 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:29:51,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:51,585 INFO L85 PathProgramCache]: Analyzing trace with hash -971008318, now seen corresponding path program 1 times [2023-11-29 01:29:51,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:51,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901707328] [2023-11-29 01:29:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:51,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:51,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:51,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135762184] [2023-11-29 01:29:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:51,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:51,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:51,594 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:51,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 01:29:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:29:51,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:29:51,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:29:52,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:30:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:30:28,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901707328] [2023-11-29 01:30:28,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:30:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135762184] [2023-11-29 01:30:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135762184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:30:28,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:30:28,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-11-29 01:30:28,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388605102] [2023-11-29 01:30:28,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:30:28,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:30:28,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:30:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:30:28,991 INFO L87 Difference]: Start difference. First operand 1169 states and 1416 transitions. Second operand has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:30:56,004 WARN L293 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 88 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:31:07,241 WARN L293 SmtUtils]: Spent 10.44s on a formula simplification. DAG size of input: 97 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:31:35,270 WARN L293 SmtUtils]: Spent 15.93s on a formula simplification. DAG size of input: 102 DAG size of output: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:31:39,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:31:55,160 WARN L293 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 74 DAG size of output: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:31:59,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:32:17,188 WARN L293 SmtUtils]: Spent 12.67s on a formula simplification. DAG size of input: 84 DAG size of output: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:32:21,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:32:22,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:32:38,306 WARN L293 SmtUtils]: Spent 12.70s on a formula simplification. DAG size of input: 75 DAG size of output: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:32:41,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:32:53,244 WARN L293 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 101 DAG size of output: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:32:54,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:32:57,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:33:03,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:33:08,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:33:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:10,381 INFO L93 Difference]: Finished difference Result 1414 states and 1721 transitions. [2023-11-29 01:33:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 01:33:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 70 [2023-11-29 01:33:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:10,388 INFO L225 Difference]: With dead ends: 1414 [2023-11-29 01:33:10,388 INFO L226 Difference]: Without dead ends: 1413 [2023-11-29 01:33:10,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 124.5s TimeCoverageRelationStatistics Valid=597, Invalid=2481, Unknown=2, NotChecked=0, Total=3080 [2023-11-29 01:33:10,389 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 441 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 106 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:10,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 238 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1582 Invalid, 2 Unknown, 0 Unchecked, 40.9s Time] [2023-11-29 01:33:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2023-11-29 01:33:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1201. [2023-11-29 01:33:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1146 states have (on average 1.1867364746945899) internal successors, (1360), 1154 states have internal predecessors, (1360), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 01:33:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1448 transitions. [2023-11-29 01:33:10,518 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1448 transitions. Word has length 70 [2023-11-29 01:33:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:10,518 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1448 transitions. [2023-11-29 01:33:10,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:33:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1448 transitions. [2023-11-29 01:33:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 01:33:10,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:10,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:10,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 01:33:10,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:33:10,720 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:33:10,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:10,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1672418430, now seen corresponding path program 2 times [2023-11-29 01:33:10,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:10,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86450937] [2023-11-29 01:33:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:10,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:10,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327014122] [2023-11-29 01:33:10,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:33:10,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:10,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:10,728 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:10,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 01:33:10,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:33:10,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:33:10,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:33:10,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:33:11,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:33:13,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86450937] [2023-11-29 01:33:13,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327014122] [2023-11-29 01:33:13,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327014122] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:33:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-11-29 01:33:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326397384] [2023-11-29 01:33:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:33:13,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:33:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:33:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:33:13,860 INFO L87 Difference]: Start difference. First operand 1201 states and 1448 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:33:24,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:33:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:25,140 INFO L93 Difference]: Finished difference Result 1344 states and 1622 transitions. [2023-11-29 01:33:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:33:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2023-11-29 01:33:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:25,146 INFO L225 Difference]: With dead ends: 1344 [2023-11-29 01:33:25,146 INFO L226 Difference]: Without dead ends: 1343 [2023-11-29 01:33:25,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:33:25,146 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:25,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 134 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2023-11-29 01:33:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2023-11-29 01:33:25,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1236. [2023-11-29 01:33:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1181 states have (on average 1.1761219305673158) internal successors, (1389), 1189 states have internal predecessors, (1389), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 01:33:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1477 transitions. [2023-11-29 01:33:25,304 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1477 transitions. Word has length 70 [2023-11-29 01:33:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:25,304 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1477 transitions. [2023-11-29 01:33:25,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:33:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1477 transitions. [2023-11-29 01:33:25,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:33:25,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:25,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:25,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 01:33:25,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:33:25,506 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:33:25,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash 901342733, now seen corresponding path program 1 times [2023-11-29 01:33:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471529330] [2023-11-29 01:33:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:25,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:25,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534821921] [2023-11-29 01:33:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:25,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:25,517 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:25,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 01:33:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:25,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:33:25,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:33:25,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:33:26,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:26,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471529330] [2023-11-29 01:33:26,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:26,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534821921] [2023-11-29 01:33:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534821921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:33:26,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:33:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-11-29 01:33:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824941712] [2023-11-29 01:33:26,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:26,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:33:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:33:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:33:26,077 INFO L87 Difference]: Start difference. First operand 1236 states and 1477 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:33:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:28,909 INFO L93 Difference]: Finished difference Result 3344 states and 4074 transitions. [2023-11-29 01:33:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:33:28,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 71 [2023-11-29 01:33:28,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:28,920 INFO L225 Difference]: With dead ends: 3344 [2023-11-29 01:33:28,920 INFO L226 Difference]: Without dead ends: 2385 [2023-11-29 01:33:28,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=432, Invalid=1460, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:33:28,922 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 523 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:28,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 240 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:33:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-11-29 01:33:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2122. [2023-11-29 01:33:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2028 states have (on average 1.180966469428008) internal successors, (2395), 2036 states have internal predecessors, (2395), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-29 01:33:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2561 transitions. [2023-11-29 01:33:29,244 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2561 transitions. Word has length 71 [2023-11-29 01:33:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:29,244 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 2561 transitions. [2023-11-29 01:33:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:33:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2561 transitions. [2023-11-29 01:33:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:33:29,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:29,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:29,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 01:33:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:29,446 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:33:29,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1665663809, now seen corresponding path program 1 times [2023-11-29 01:33:29,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:29,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515822457] [2023-11-29 01:33:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:29,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:29,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:29,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887369719] [2023-11-29 01:33:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:29,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:29,453 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:29,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 01:33:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:29,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 01:33:29,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:33:30,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:39,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:39,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515822457] [2023-11-29 01:33:39,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:39,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887369719] [2023-11-29 01:33:39,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887369719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:39,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:33:39,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 01:33:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507293561] [2023-11-29 01:33:39,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:33:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:33:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=330, Unknown=1, NotChecked=0, Total=420 [2023-11-29 01:33:39,043 INFO L87 Difference]: Start difference. First operand 2122 states and 2561 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:33:40,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:40,791 INFO L93 Difference]: Finished difference Result 2141 states and 2582 transitions. [2023-11-29 01:33:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:33:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 71 [2023-11-29 01:33:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:40,798 INFO L225 Difference]: With dead ends: 2141 [2023-11-29 01:33:40,798 INFO L226 Difference]: Without dead ends: 2140 [2023-11-29 01:33:40,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=206, Invalid=663, Unknown=1, NotChecked=0, Total=870 [2023-11-29 01:33:40,799 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 228 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:40,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 239 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:33:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2023-11-29 01:33:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2129. [2023-11-29 01:33:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2035 states have (on average 1.1803439803439804) internal successors, (2402), 2043 states have internal predecessors, (2402), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-29 01:33:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2568 transitions. [2023-11-29 01:33:41,125 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2568 transitions. Word has length 71 [2023-11-29 01:33:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:41,125 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 2568 transitions. [2023-11-29 01:33:41,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:33:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2568 transitions. [2023-11-29 01:33:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 01:33:41,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:41,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:41,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-29 01:33:41,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 01:33:41,327 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:33:41,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:41,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1672767130, now seen corresponding path program 1 times [2023-11-29 01:33:41,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:41,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634786590] [2023-11-29 01:33:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:41,333 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:41,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964079670] [2023-11-29 01:33:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:41,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:41,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:41,334 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:41,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 01:33:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:41,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:33:41,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:33:41,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:33:41,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634786590] [2023-11-29 01:33:41,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964079670] [2023-11-29 01:33:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964079670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:33:41,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:33:41,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-29 01:33:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295983925] [2023-11-29 01:33:41,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:41,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:33:41,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:33:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:33:41,867 INFO L87 Difference]: Start difference. First operand 2129 states and 2568 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 01:33:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:43,860 INFO L93 Difference]: Finished difference Result 3837 states and 4644 transitions. [2023-11-29 01:33:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:33:43,861 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 72 [2023-11-29 01:33:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:43,866 INFO L225 Difference]: With dead ends: 3837 [2023-11-29 01:33:43,866 INFO L226 Difference]: Without dead ends: 2095 [2023-11-29 01:33:43,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:33:43,869 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 444 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:43,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 217 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:33:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2023-11-29 01:33:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1746. [2023-11-29 01:33:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1670 states have (on average 1.1712574850299402) internal successors, (1956), 1678 states have internal predecessors, (1956), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 01:33:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2086 transitions. [2023-11-29 01:33:44,139 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2086 transitions. Word has length 72 [2023-11-29 01:33:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:44,139 INFO L495 AbstractCegarLoop]: Abstraction has 1746 states and 2086 transitions. [2023-11-29 01:33:44,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 01:33:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2086 transitions. [2023-11-29 01:33:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:33:44,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:44,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:44,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 01:33:44,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:44,342 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:33:44,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1804651573, now seen corresponding path program 1 times [2023-11-29 01:33:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110515037] [2023-11-29 01:33:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:44,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890197270] [2023-11-29 01:33:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:44,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:44,349 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:44,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 01:33:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:44,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:33:44,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:33:45,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:57,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110515037] [2023-11-29 01:33:57,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890197270] [2023-11-29 01:33:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890197270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:57,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:33:57,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 01:33:57,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789618369] [2023-11-29 01:33:57,443 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:57,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:33:57,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:33:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=526, Unknown=2, NotChecked=0, Total=650 [2023-11-29 01:33:57,444 INFO L87 Difference]: Start difference. First operand 1746 states and 2086 transitions. Second operand has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:33:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:59,203 INFO L93 Difference]: Finished difference Result 1765 states and 2107 transitions. [2023-11-29 01:33:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:33:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 77 [2023-11-29 01:33:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:59,207 INFO L225 Difference]: With dead ends: 1765 [2023-11-29 01:33:59,208 INFO L226 Difference]: Without dead ends: 1764 [2023-11-29 01:33:59,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=280, Invalid=978, Unknown=2, NotChecked=0, Total=1260 [2023-11-29 01:33:59,209 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 231 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:59,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 251 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:33:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-29 01:33:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1753. [2023-11-29 01:33:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1677 states have (on average 1.1705426356589148) internal successors, (1963), 1685 states have internal predecessors, (1963), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 01:33:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2093 transitions. [2023-11-29 01:33:59,473 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2093 transitions. Word has length 77 [2023-11-29 01:33:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:59,473 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 2093 transitions. [2023-11-29 01:33:59,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:33:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2093 transitions. [2023-11-29 01:33:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:33:59,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:59,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:59,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 01:33:59,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:59,675 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:33:59,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash -343933618, now seen corresponding path program 1 times [2023-11-29 01:33:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493932815] [2023-11-29 01:33:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:59,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:59,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844085543] [2023-11-29 01:33:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:59,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:59,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:59,685 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:59,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 01:33:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:59,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:33:59,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:34:00,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:34:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:34:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:00,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493932815] [2023-11-29 01:34:00,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:34:00,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844085543] [2023-11-29 01:34:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844085543] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:34:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 23 [2023-11-29 01:34:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114671476] [2023-11-29 01:34:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:34:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:34:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:34:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:34:00,830 INFO L87 Difference]: Start difference. First operand 1753 states and 2093 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:34:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:01,969 INFO L93 Difference]: Finished difference Result 2008 states and 2393 transitions. [2023-11-29 01:34:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:34:01,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2023-11-29 01:34:01,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:01,973 INFO L225 Difference]: With dead ends: 2008 [2023-11-29 01:34:01,973 INFO L226 Difference]: Without dead ends: 1469 [2023-11-29 01:34:01,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:34:01,975 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 137 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:01,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 91 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:34:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-11-29 01:34:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1437. [2023-11-29 01:34:02,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1371 states have (on average 1.1706783369803064) internal successors, (1605), 1379 states have internal predecessors, (1605), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-29 01:34:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1715 transitions. [2023-11-29 01:34:02,201 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1715 transitions. Word has length 78 [2023-11-29 01:34:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:02,201 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1715 transitions. [2023-11-29 01:34:02,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:34:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1715 transitions. [2023-11-29 01:34:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 01:34:02,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:02,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:02,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 01:34:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 01:34:02,403 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:34:02,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash 231487315, now seen corresponding path program 1 times [2023-11-29 01:34:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:02,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377360451] [2023-11-29 01:34:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:02,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:34:02,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001048875] [2023-11-29 01:34:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:02,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:02,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:02,412 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 01:34:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:02,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:34:02,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:34:02,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:34:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:34:37,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377360451] [2023-11-29 01:34:37,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:34:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001048875] [2023-11-29 01:34:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001048875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:34:37,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:34:37,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-11-29 01:34:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102013287] [2023-11-29 01:34:37,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:34:37,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:34:37,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:34:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=346, Unknown=2, NotChecked=0, Total=462 [2023-11-29 01:34:37,097 INFO L87 Difference]: Start difference. First operand 1437 states and 1715 transitions. Second operand has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 22 states have internal predecessors, (118), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:34:52,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:34:56,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:35:07,627 WARN L293 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 35 DAG size of output: 11 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:35:32,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:35:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:35:39,779 INFO L93 Difference]: Finished difference Result 2670 states and 3183 transitions. [2023-11-29 01:35:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 01:35:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 22 states have internal predecessors, (118), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 84 [2023-11-29 01:35:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:35:39,783 INFO L225 Difference]: With dead ends: 2670 [2023-11-29 01:35:39,783 INFO L226 Difference]: Without dead ends: 2669 [2023-11-29 01:35:39,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=484, Invalid=1405, Unknown=3, NotChecked=0, Total=1892 [2023-11-29 01:35:39,784 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 857 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:35:39,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 352 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1477 Invalid, 1 Unknown, 0 Unchecked, 34.6s Time] [2023-11-29 01:35:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2023-11-29 01:35:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2309. [2023-11-29 01:35:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2201 states have (on average 1.178555202180827) internal successors, (2594), 2209 states have internal predecessors, (2594), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 01:35:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2788 transitions. [2023-11-29 01:35:40,205 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2788 transitions. Word has length 84 [2023-11-29 01:35:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:35:40,205 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 2788 transitions. [2023-11-29 01:35:40,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 22 states have internal predecessors, (118), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:35:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2788 transitions. [2023-11-29 01:35:40,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:35:40,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:35:40,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:35:40,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-11-29 01:35:40,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 01:35:40,408 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:35:40,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:35:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash -787480161, now seen corresponding path program 1 times [2023-11-29 01:35:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:35:40,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675727301] [2023-11-29 01:35:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:35:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:35:40,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:35:40,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847178962] [2023-11-29 01:35:40,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:35:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:35:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:35:40,417 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:35:40,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 01:35:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:35:40,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:35:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 01:35:40,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:35:41,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:35:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675727301] [2023-11-29 01:35:41,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:35:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847178962] [2023-11-29 01:35:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847178962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:35:41,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:35:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 01:35:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211097952] [2023-11-29 01:35:41,947 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:35:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:35:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:35:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:35:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:35:41,948 INFO L87 Difference]: Start difference. First operand 2309 states and 2788 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:35:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:35:43,016 INFO L93 Difference]: Finished difference Result 2340 states and 2820 transitions. [2023-11-29 01:35:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:35:43,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 85 [2023-11-29 01:35:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:35:43,020 INFO L225 Difference]: With dead ends: 2340 [2023-11-29 01:35:43,020 INFO L226 Difference]: Without dead ends: 2339 [2023-11-29 01:35:43,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:35:43,021 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 151 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:35:43,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 171 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:35:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2023-11-29 01:35:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2313. [2023-11-29 01:35:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2205 states have (on average 1.1782312925170069) internal successors, (2598), 2213 states have internal predecessors, (2598), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 01:35:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2792 transitions. [2023-11-29 01:35:43,419 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2792 transitions. Word has length 85 [2023-11-29 01:35:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:35:43,419 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 2792 transitions. [2023-11-29 01:35:43,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:35:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2792 transitions. [2023-11-29 01:35:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:35:43,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:35:43,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:35:43,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 01:35:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 01:35:43,621 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:35:43,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:35:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -483654812, now seen corresponding path program 1 times [2023-11-29 01:35:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:35:43,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674633845] [2023-11-29 01:35:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:35:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:35:43,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:35:43,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181880324] [2023-11-29 01:35:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:35:43,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:35:43,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:35:43,628 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:35:43,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 01:35:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:43,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:35:43,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:35:58,512 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:36:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:36:00,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:05,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674633845] [2023-11-29 01:36:05,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:36:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181880324] [2023-11-29 01:36:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181880324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:05,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:36:05,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 01:36:05,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244137009] [2023-11-29 01:36:05,684 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:05,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:36:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:36:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=354, Unknown=1, NotChecked=0, Total=420 [2023-11-29 01:36:05,685 INFO L87 Difference]: Start difference. First operand 2313 states and 2792 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:36:41,512 WARN L293 SmtUtils]: Spent 14.18s on a formula simplification. DAG size of input: 68 DAG size of output: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:36:49,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:36:54,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:37:06,119 WARN L293 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 63 DAG size of output: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:37:15,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:37:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:16,265 INFO L93 Difference]: Finished difference Result 2316 states and 2794 transitions. [2023-11-29 01:37:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:37:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 86 [2023-11-29 01:37:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:16,269 INFO L225 Difference]: With dead ends: 2316 [2023-11-29 01:37:16,269 INFO L226 Difference]: Without dead ends: 2315 [2023-11-29 01:37:16,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=123, Invalid=686, Unknown=3, NotChecked=0, Total=812 [2023-11-29 01:37:16,270 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 110 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:16,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 338 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1226 Invalid, 4 Unknown, 0 Unchecked, 28.5s Time] [2023-11-29 01:37:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2023-11-29 01:37:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2307. [2023-11-29 01:37:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2199 states have (on average 1.178262846748522) internal successors, (2591), 2207 states have internal predecessors, (2591), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 01:37:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2785 transitions. [2023-11-29 01:37:16,688 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2785 transitions. Word has length 86 [2023-11-29 01:37:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:16,688 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 2785 transitions. [2023-11-29 01:37:16,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:37:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2785 transitions. [2023-11-29 01:37:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:37:16,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:16,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:16,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-29 01:37:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 01:37:16,890 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:37:16,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:16,890 INFO L85 PathProgramCache]: Analyzing trace with hash -854187487, now seen corresponding path program 1 times [2023-11-29 01:37:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125561334] [2023-11-29 01:37:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:16,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:16,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:37:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490366195] [2023-11-29 01:37:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:16,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:16,899 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:16,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 01:37:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:16,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 01:37:16,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:37:18,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:37:45,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125561334] [2023-11-29 01:37:45,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:37:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490366195] [2023-11-29 01:37:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490366195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:45,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:37:45,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 01:37:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098046380] [2023-11-29 01:37:45,695 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:37:45,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:37:45,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:37:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:37:45,697 INFO L87 Difference]: Start difference. First operand 2307 states and 2785 transitions. Second operand has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:37:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:48,555 INFO L93 Difference]: Finished difference Result 2318 states and 2796 transitions. [2023-11-29 01:37:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:37:48,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 87 [2023-11-29 01:37:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:48,558 INFO L225 Difference]: With dead ends: 2318 [2023-11-29 01:37:48,558 INFO L226 Difference]: Without dead ends: 2317 [2023-11-29 01:37:48,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:37:48,559 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 97 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:48,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 243 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:37:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-11-29 01:37:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2309. [2023-11-29 01:37:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2201 states have (on average 1.17810086324398) internal successors, (2593), 2209 states have internal predecessors, (2593), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 01:37:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2787 transitions. [2023-11-29 01:37:48,958 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2787 transitions. Word has length 87 [2023-11-29 01:37:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:48,958 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 2787 transitions. [2023-11-29 01:37:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:37:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2787 transitions. [2023-11-29 01:37:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:37:48,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:48,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:48,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 01:37:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:49,160 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 01:37:49,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1687516195, now seen corresponding path program 1 times [2023-11-29 01:37:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243749284] [2023-11-29 01:37:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:49,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:37:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283173299] [2023-11-29 01:37:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:49,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:49,169 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:49,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2c0674-0877-4fb7-9479-64be8508d046/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 01:37:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:37:49,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:38:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:38:12,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:38:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243749284] [2023-11-29 01:38:18,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:38:18,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283173299] [2023-11-29 01:38:18,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283173299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:38:18,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:38:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 01:38:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526887345] [2023-11-29 01:38:18,199 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:38:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:38:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:38:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:38:18,200 INFO L87 Difference]: Start difference. First operand 2309 states and 2787 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:38:20,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:38:24,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:38:28,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:38:33,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]