./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0fb0070f46fa34e60f2a21833c13b7b67c557f142ffbdfed9bc8ff3d84f7456 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:26,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:26,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:26,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:26,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:26,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:26,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:26,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:26,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:26,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:26,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:26,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:26,883 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:26,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:26,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:26,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:26,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:26,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:26,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:26,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:26,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:26,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:26,892 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:26,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:26,893 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:26,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:26,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:26,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:26,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:26,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:26,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:26,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:26,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:26,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:26,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:26,907 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:26,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:26,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:26,908 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:26,909 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_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0fb0070f46fa34e60f2a21833c13b7b67c557f142ffbdfed9bc8ff3d84f7456 [2023-11-19 07:59:27,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:27,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:27,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:27,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:27,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:27,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/array-fpi/eqn3.c [2023-11-19 07:59:30,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:30,700 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:30,700 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/sv-benchmarks/c/array-fpi/eqn3.c [2023-11-19 07:59:30,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/data/a44bfdbad/2c58d05a9fcb4895afb3dbdd8d8668d6/FLAG75b0cc984 [2023-11-19 07:59:30,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/data/a44bfdbad/2c58d05a9fcb4895afb3dbdd8d8668d6 [2023-11-19 07:59:30,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:30,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:30,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:30,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:30,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:30,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@843e799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30, skipping insertion in model container [2023-11-19 07:59:30,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:30,938 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/sv-benchmarks/c/array-fpi/eqn3.c[587,600] [2023-11-19 07:59:30,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:30,973 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:30,993 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/sv-benchmarks/c/array-fpi/eqn3.c[587,600] [2023-11-19 07:59:31,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:31,018 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:31,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31 WrapperNode [2023-11-19 07:59:31,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:31,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:31,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:31,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:31,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,059 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2023-11-19 07:59:31,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:31,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:31,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:31,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:31,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:31,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:31,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:31,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:31,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (1/1) ... [2023-11-19 07:59:31,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:31,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:31,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:31,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:31,249 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:31,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:31,480 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:31,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:31,489 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:59:31,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:31 BoogieIcfgContainer [2023-11-19 07:59:31,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:31,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:31,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:31,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:31,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:30" (1/3) ... [2023-11-19 07:59:31,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bc9e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:31, skipping insertion in model container [2023-11-19 07:59:31,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:31" (2/3) ... [2023-11-19 07:59:31,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bc9e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:31, skipping insertion in model container [2023-11-19 07:59:31,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:31" (3/3) ... [2023-11-19 07:59:31,505 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn3.c [2023-11-19 07:59:31,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:31,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:59:31,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:31,601 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;@be718c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:31,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:59:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:31,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:31,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:31,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-11-19 07:59:31,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632533230] [2023-11-19 07:59:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:31,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632533230] [2023-11-19 07:59:31,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:59:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341437228] [2023-11-19 07:59:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:31,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:31,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:31,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:31,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:31,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:59:31,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:32,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341437228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:32,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:32,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812834007] [2023-11-19 07:59:32,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:32,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:59:32,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:59:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:59:32,059 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:32,083 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-11-19 07:59:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:59:32,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 07:59:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:32,097 INFO L225 Difference]: With dead ends: 38 [2023-11-19 07:59:32,097 INFO L226 Difference]: Without dead ends: 17 [2023-11-19 07:59:32,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:59:32,112 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:32,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-19 07:59:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-19 07:59:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-19 07:59:32,163 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-11-19 07:59:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:32,164 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-19 07:59:32,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-19 07:59:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:32,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:32,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:32,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:59:32,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:59:32,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:32,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-11-19 07:59:32,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:32,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342965174] [2023-11-19 07:59:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:32,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:32,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:32,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039063256] [2023-11-19 07:59:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:32,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:32,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:32,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:59:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:32,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:59:32,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:32,649 INFO L349 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-11-19 07:59:32,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 64 [2023-11-19 07:59:32,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 07:59:32,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 07:59:32,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 12 [2023-11-19 07:59:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:32,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:32,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342965174] [2023-11-19 07:59:32,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039063256] [2023-11-19 07:59:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039063256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806589645] [2023-11-19 07:59:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:32,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:32,873 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:32,993 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-19 07:59:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 07:59:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:32,997 INFO L225 Difference]: With dead ends: 33 [2023-11-19 07:59:32,998 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 07:59:33,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:33,002 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:33,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 46 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 07:59:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2023-11-19 07:59:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-19 07:59:33,025 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2023-11-19 07:59:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:33,026 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-19 07:59:33,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-19 07:59:33,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:59:33,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:33,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:33,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:33,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:33,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2023-11-19 07:59:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:33,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465035608] [2023-11-19 07:59:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:33,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:33,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:33,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780072655] [2023-11-19 07:59:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:33,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:33,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:33,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:33,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:33,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:33,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465035608] [2023-11-19 07:59:33,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780072655] [2023-11-19 07:59:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780072655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107685837] [2023-11-19 07:59:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:33,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:33,474 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:33,601 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-11-19 07:59:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 07:59:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:33,604 INFO L225 Difference]: With dead ends: 49 [2023-11-19 07:59:33,604 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 07:59:33,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:33,607 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:33,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 07:59:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2023-11-19 07:59:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-19 07:59:33,616 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2023-11-19 07:59:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:33,617 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-19 07:59:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-19 07:59:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:59:33,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:33,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:33,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:33,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:33,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:33,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:33,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2023-11-19 07:59:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805133404] [2023-11-19 07:59:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:33,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:33,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827500959] [2023-11-19 07:59:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:33,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:33,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:33,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:59:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:34,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:34,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805133404] [2023-11-19 07:59:34,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827500959] [2023-11-19 07:59:34,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827500959] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:34,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:34,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-19 07:59:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014244] [2023-11-19 07:59:34,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:34,112 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:34,232 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-11-19 07:59:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:34,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 07:59:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:34,233 INFO L225 Difference]: With dead ends: 44 [2023-11-19 07:59:34,233 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 07:59:34,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:59:34,236 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:34,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 07:59:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-11-19 07:59:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-11-19 07:59:34,244 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2023-11-19 07:59:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:34,245 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-11-19 07:59:34,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-11-19 07:59:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:59:34,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:34,246 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:34,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:34,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:34,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:34,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2023-11-19 07:59:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:34,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220282404] [2023-11-19 07:59:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:34,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978223730] [2023-11-19 07:59:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:34,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:34,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:34,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:59:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:34,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:34,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220282404] [2023-11-19 07:59:34,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978223730] [2023-11-19 07:59:34,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978223730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:34,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:34,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:59:34,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536694992] [2023-11-19 07:59:34,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:34,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:34,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:34,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:34,714 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:34,815 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-11-19 07:59:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:34,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 07:59:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:34,816 INFO L225 Difference]: With dead ends: 41 [2023-11-19 07:59:34,817 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 07:59:34,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:34,818 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:34,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 07:59:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-11-19 07:59:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-19 07:59:34,825 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2023-11-19 07:59:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:34,825 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-19 07:59:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-19 07:59:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:59:34,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:34,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:34,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:35,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:35,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-11-19 07:59:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:35,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513764193] [2023-11-19 07:59:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:35,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:35,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:35,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719895900] [2023-11-19 07:59:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:35,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:35,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:35,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:35,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:35,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:59:35,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:35,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:59:35,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:59:35,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-11-19 07:59:35,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 07:59:35,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:59:35,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:59:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:35,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:35,676 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_120 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_120) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2023-11-19 07:59:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:59:35,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513764193] [2023-11-19 07:59:35,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719895900] [2023-11-19 07:59:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719895900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:35,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-19 07:59:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169907926] [2023-11-19 07:59:35,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:35,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:59:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:59:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2023-11-19 07:59:35,713 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:36,308 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2023-11-19 07:59:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:59:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 07:59:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:36,310 INFO L225 Difference]: With dead ends: 53 [2023-11-19 07:59:36,310 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:59:36,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=197, Unknown=1, NotChecked=30, Total=306 [2023-11-19 07:59:36,312 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:36,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 76 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 89 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2023-11-19 07:59:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:59:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 26. [2023-11-19 07:59:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-19 07:59:36,337 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2023-11-19 07:59:36,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:36,338 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-19 07:59:36,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-19 07:59:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:59:36,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:36,341 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:36,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:36,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:59:36,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:36,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2023-11-19 07:59:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:36,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612264190] [2023-11-19 07:59:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:36,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:36,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025382673] [2023-11-19 07:59:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:36,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:36,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:36,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:59:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:36,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:59:36,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:36,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:59:36,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-19 07:59:36,923 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:36,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:59:37,009 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:37,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:59:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:37,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:38,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612264190] [2023-11-19 07:59:38,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025382673] [2023-11-19 07:59:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025382673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:38,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2023-11-19 07:59:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202969271] [2023-11-19 07:59:38,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:38,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:59:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:59:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=242, Unknown=1, NotChecked=0, Total=306 [2023-11-19 07:59:38,459 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:38,567 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse2 (* .cse3 8)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (or (forall ((v_ArrVal_152 (Array Int Int))) (or (= 6 (select v_ArrVal_152 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_ArrVal_152 (let ((.cse1 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse0 .cse1 (select v_ArrVal_152 .cse1))))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_152) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (< .cse3 2147483648)) (or (forall ((v_ArrVal_152 (Array Int Int))) (or (= 6 (select v_ArrVal_152 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_ArrVal_152 (let ((.cse4 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse4 (select v_ArrVal_152 .cse4))))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_152) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (< 2147483647 .cse3)) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) 0) 1) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select .cse0 0) 6)))) is different from false [2023-11-19 07:59:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:43,956 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2023-11-19 07:59:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 07:59:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 07:59:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:43,958 INFO L225 Difference]: With dead ends: 98 [2023-11-19 07:59:43,958 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:59:43,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=429, Invalid=1734, Unknown=3, NotChecked=90, Total=2256 [2023-11-19 07:59:43,961 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 148 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:43,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 118 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 219 Invalid, 0 Unknown, 31 Unchecked, 1.2s Time] [2023-11-19 07:59:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:59:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 50. [2023-11-19 07:59:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2023-11-19 07:59:43,983 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 20 [2023-11-19 07:59:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:43,983 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2023-11-19 07:59:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2023-11-19 07:59:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:59:43,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:43,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:44,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:44,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:59:44,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:44,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1334592554, now seen corresponding path program 2 times [2023-11-19 07:59:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:44,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576948975] [2023-11-19 07:59:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:44,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:44,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:44,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300462572] [2023-11-19 07:59:44,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:44,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:44,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:44,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:59:44,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:59:44,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:44,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:44,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:59:44,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:59:44,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:44,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576948975] [2023-11-19 07:59:44,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:44,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300462572] [2023-11-19 07:59:44,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300462572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:44,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:44,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-19 07:59:44,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119173495] [2023-11-19 07:59:44,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:44,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:59:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:59:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:44,494 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:44,699 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2023-11-19 07:59:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:59:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 07:59:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:44,701 INFO L225 Difference]: With dead ends: 89 [2023-11-19 07:59:44,701 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 07:59:44,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:59:44,702 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:44,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 07:59:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2023-11-19 07:59:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-11-19 07:59:44,729 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 20 [2023-11-19 07:59:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:44,730 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-11-19 07:59:44,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-11-19 07:59:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:59:44,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:44,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:44,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:44,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:44,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:44,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1146782124, now seen corresponding path program 3 times [2023-11-19 07:59:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:44,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297077663] [2023-11-19 07:59:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:44,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496544843] [2023-11-19 07:59:44,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:59:44,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:44,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:45,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:59:45,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 07:59:45,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:45,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:45,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:45,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297077663] [2023-11-19 07:59:45,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:45,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496544843] [2023-11-19 07:59:45,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496544843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:45,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:45,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-19 07:59:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359779008] [2023-11-19 07:59:45,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:45,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:45,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:45,413 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:45,743 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2023-11-19 07:59:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:59:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-19 07:59:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:45,745 INFO L225 Difference]: With dead ends: 98 [2023-11-19 07:59:45,745 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 07:59:45,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:59:45,746 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:45,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 77 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 07:59:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2023-11-19 07:59:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-19 07:59:45,760 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 22 [2023-11-19 07:59:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-19 07:59:45,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-19 07:59:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:59:45,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:45,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:45,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:45,970 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:45,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 2 times [2023-11-19 07:59:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:45,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771550471] [2023-11-19 07:59:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:45,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404815393] [2023-11-19 07:59:45,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:45,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:45,999 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:46,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:59:46,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:59:46,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:46,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 07:59:46,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:46,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:59:46,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-19 07:59:46,344 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:46,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:59:46,397 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:46,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:59:46,477 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:46,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:59:46,571 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:46,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:59:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:46,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:47,847 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (* .cse3 8))) (and (or (forall ((v_ArrVal_261 (Array Int Int))) (or (= 7 (+ (select v_ArrVal_261 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) (not (= v_ArrVal_261 (let ((.cse1 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse0 .cse1 (select v_ArrVal_261 .cse1))))))) (< .cse3 2147483648)) (or (< 2147483647 .cse3) (forall ((v_ArrVal_261 (Array Int Int))) (or (= 7 (+ (select v_ArrVal_261 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) (not (= v_ArrVal_261 (let ((.cse4 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse4 (select v_ArrVal_261 .cse4))))))))))) is different from false [2023-11-19 07:59:47,887 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (* .cse3 8))) (and (or (forall ((v_ArrVal_261 (Array Int Int))) (or (= 7 (+ (select v_ArrVal_261 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) (not (= v_ArrVal_261 (let ((.cse1 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse0 .cse1 (select v_ArrVal_261 .cse1))))))) (< .cse3 2147483648)) (or (forall ((v_ArrVal_261 (Array Int Int))) (or (= 7 (+ (select v_ArrVal_261 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) (not (= v_ArrVal_261 (let ((.cse4 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse4 (select v_ArrVal_261 .cse4))))))) (< 2147483647 .cse3))))) is different from false [2023-11-19 07:59:48,107 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse7 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse10 (* .cse9 8))) (let ((.cse2 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse3 (< .cse9 2147483648)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (< 2147483647 .cse9)) (.cse6 (* .cse7 8))) (and (or (let ((.cse1 (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (forall ((v_ArrVal_261 (Array Int Int))) (or (not (= v_ArrVal_261 (store (store .cse0 .cse1 (select v_ArrVal_261 .cse1)) .cse2 (select v_ArrVal_261 .cse2)))) (= 7 (+ (select v_ArrVal_261 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse3) (or .cse4 (forall ((v_prenex_3 (Array Int Int))) (or (not (= (store (store .cse0 .cse1 (select v_prenex_3 .cse1)) .cse5 (select v_prenex_3 .cse5)) v_prenex_3)) (= 7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_3) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_prenex_3 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (< .cse7 2147483648)) (or (< 2147483647 .cse7) (let ((.cse8 (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (forall ((v_ArrVal_261 (Array Int Int))) (or (not (= v_ArrVal_261 (store (store .cse0 .cse8 (select v_ArrVal_261 .cse8)) .cse2 (select v_ArrVal_261 .cse2)))) (= 7 (+ (select v_ArrVal_261 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse3) (or (forall ((v_prenex_4 (Array Int Int))) (or (not (= (store (store .cse0 .cse8 (select v_prenex_4 .cse8)) .cse5 (select v_prenex_4 .cse5)) v_prenex_4)) (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_4) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_prenex_4 |c_ULTIMATE.start_main_~a~0#1.offset|)) 7))) .cse4)))))))) is different from false [2023-11-19 07:59:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-19 07:59:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771550471] [2023-11-19 07:59:48,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404815393] [2023-11-19 07:59:48,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404815393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:48,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:48,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2023-11-19 07:59:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185721361] [2023-11-19 07:59:48,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 07:59:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 07:59:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=286, Unknown=3, NotChecked=108, Total=462 [2023-11-19 07:59:48,137 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:49,675 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-11-19 07:59:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:59:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 07:59:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:49,676 INFO L225 Difference]: With dead ends: 78 [2023-11-19 07:59:49,676 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:59:49,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=214, Invalid=725, Unknown=3, NotChecked=180, Total=1122 [2023-11-19 07:59:49,678 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:49,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 159 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 251 Invalid, 0 Unknown, 177 Unchecked, 0.5s Time] [2023-11-19 07:59:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:59:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 48. [2023-11-19 07:59:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-11-19 07:59:49,692 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 24 [2023-11-19 07:59:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:49,693 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-11-19 07:59:49,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-11-19 07:59:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:59:49,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:49,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:49,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:49,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:49,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:49,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1083970380, now seen corresponding path program 3 times [2023-11-19 07:59:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:49,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161337578] [2023-11-19 07:59:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:49,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:49,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:49,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779649966] [2023-11-19 07:59:49,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:59:49,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:49,958 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:49,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:59:50,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 07:59:50,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:50,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:50,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:59:50,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:59:50,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:50,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161337578] [2023-11-19 07:59:50,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:50,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779649966] [2023-11-19 07:59:50,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779649966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:50,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:50,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-19 07:59:50,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103688999] [2023-11-19 07:59:50,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:59:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:59:50,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:50,259 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:50,424 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2023-11-19 07:59:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:59:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 07:59:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:50,425 INFO L225 Difference]: With dead ends: 64 [2023-11-19 07:59:50,426 INFO L226 Difference]: Without dead ends: 55 [2023-11-19 07:59:50,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:59:50,427 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:50,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 33 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-19 07:59:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2023-11-19 07:59:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-11-19 07:59:50,440 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 24 [2023-11-19 07:59:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:50,440 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-11-19 07:59:50,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-11-19 07:59:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:59:50,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:50,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:50,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:50,650 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:50,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 4 times [2023-11-19 07:59:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:50,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003838908] [2023-11-19 07:59:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:50,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559378925] [2023-11-19 07:59:50,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:59:50,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:50,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:59:51,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:59:51,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:51,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 07:59:51,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:51,201 INFO L349 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-11-19 07:59:51,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 64 [2023-11-19 07:59:51,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 07:59:51,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 07:59:51,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 14 [2023-11-19 07:59:51,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:59:51,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:59:51,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:59:51,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:59:51,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:59:51,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:59:51,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:59:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:51,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:59:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003838908] [2023-11-19 07:59:52,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559378925] [2023-11-19 07:59:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559378925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:52,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-11-19 07:59:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046826773] [2023-11-19 07:59:52,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:59:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:59:52,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=217, Unknown=10, NotChecked=0, Total=306 [2023-11-19 07:59:52,867 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:54,298 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-11-19 07:59:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:59:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 07:59:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:54,300 INFO L225 Difference]: With dead ends: 113 [2023-11-19 07:59:54,301 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 07:59:54,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=264, Invalid=718, Unknown=10, NotChecked=0, Total=992 [2023-11-19 07:59:54,303 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 256 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:54,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 133 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:59:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 07:59:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 49. [2023-11-19 07:59:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-11-19 07:59:54,323 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2023-11-19 07:59:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:54,324 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-11-19 07:59:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-11-19 07:59:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:59:54,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:54,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:54,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:54,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:59:54,533 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:54,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash 149788298, now seen corresponding path program 4 times [2023-11-19 07:59:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769476539] [2023-11-19 07:59:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:54,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:54,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:54,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633101432] [2023-11-19 07:59:54,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:59:54,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:54,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:54,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:59:54,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:59:54,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:54,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:54,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:59:54,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:59:54,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769476539] [2023-11-19 07:59:54,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:54,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633101432] [2023-11-19 07:59:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633101432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:54,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:54,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-19 07:59:54,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301150037] [2023-11-19 07:59:54,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:54,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:54,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:54,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:54,794 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:55,027 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2023-11-19 07:59:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:59:55,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 07:59:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:55,028 INFO L225 Difference]: With dead ends: 84 [2023-11-19 07:59:55,028 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 07:59:55,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:59:55,029 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 72 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:55,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 75 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 07:59:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2023-11-19 07:59:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-11-19 07:59:55,046 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 26 [2023-11-19 07:59:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:55,046 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-11-19 07:59:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-11-19 07:59:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:59:55,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:55,048 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:55,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:55,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:59:55,265 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:55,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 5 times [2023-11-19 07:59:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:55,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421856294] [2023-11-19 07:59:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:55,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859262574] [2023-11-19 07:59:55,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:59:55,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:55,284 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:55,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751597d4-0929-47a6-8736-0de8c7a323db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:59:57,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-19 07:59:57,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:57,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-19 07:59:57,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:57,049 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-19 07:59:57,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-11-19 07:59:57,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:59:57,102 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:57,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:59:57,197 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:57,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:59:57,359 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:59:57,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 48 [2023-11-19 07:59:57,529 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-11-19 07:59:57,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 47 treesize of output 58 [2023-11-19 07:59:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:58,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:06,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421856294] [2023-11-19 08:00:06,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:06,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859262574] [2023-11-19 08:00:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859262574] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:06,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:06,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2023-11-19 08:00:06,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760876037] [2023-11-19 08:00:06,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:06,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 08:00:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:06,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 08:00:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2023-11-19 08:00:06,606 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:13,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-19 08:00:15,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-19 08:00:21,813 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse112 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse114 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse117 (* 8 .cse112))) (let ((.cse66 (select .cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse117))) (.cse67 (select .cse0 (+ (- 34359738368) .cse117 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse116 (* .cse114 8)) (.cse115 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse73 (select .cse0 (+ .cse117 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse50 (select .cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse117))) (.cse113 (* .cse115 8)) (.cse64 (+ .cse116 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse70 (+ .cse66 .cse67)) (.cse42 (+ .cse116 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse49 (+ .cse116 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (let ((.cse28 (select .cse11 .cse49)) (.cse20 (select .cse11 .cse42)) (.cse21 (store .cse0 .cse64 .cse70)) (.cse27 (+ .cse116 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse26 (+ .cse113 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse72 (store .cse0 .cse64 (+ .cse73 .cse50))) (.cse22 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse43 (+ 6 .cse50)) (.cse29 (< 2147483647 .cse112)) (.cse2 (< 2147483647 .cse115)) (.cse18 (+ .cse113 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse19 (< .cse115 2147483648)) (.cse25 (< .cse114 2147483648)) (.cse1 (< 2147483647 .cse114)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse89 (+ .cse66 6)) (.cse12 (+ .cse113 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (< .cse112 2147483648))) (and (= 19 (select .cse0 16)) (or .cse1 (let ((.cse10 (+ 6 .cse20))) (and (or .cse2 (forall ((v_ArrVal_427 Int)) (let ((.cse9 (store .cse11 .cse12 v_ArrVal_427))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse9))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse4 (select .cse6 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= 19 (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse3 .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse6 .cse7 (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (< 1 .cse4) (< v_ArrVal_427 .cse10)))))))) (or (forall ((v_ArrVal_427 Int)) (let ((.cse17 (store .cse11 .cse18 v_ArrVal_427))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= 19 (let ((.cse13 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse15 .cse7 (+ .cse13 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse16))) (< 1 .cse16) (< v_ArrVal_427 .cse10))))))) .cse19)))) (or (= 19 (select .cse21 .cse22)) .cse23 (< 1 (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse24 (store .cse0 .cse26 (+ (select .cse0 .cse27) .cse28)))) (or (= 19 (select .cse24 .cse22)) (< 1 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse25)) (or .cse29 (let ((.cse30 (+ 12 .cse50))) (and (or .cse1 (let ((.cse36 (store .cse11 .cse42 .cse43))) (and (or .cse2 (forall ((v_ArrVal_427 Int)) (let ((.cse35 (store .cse36 .cse12 v_ArrVal_427))) (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse35))) (let ((.cse34 (select .cse33 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse32 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< v_ArrVal_427 .cse30) (= 19 (let ((.cse31 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse31 .cse32 (select (select (store .cse33 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse34 .cse7 (+ .cse31 .cse32))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (< 1 .cse32)))))))) (or (forall ((v_ArrVal_427 Int)) (let ((.cse41 (store .cse36 .cse18 v_ArrVal_427))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse41))) (let ((.cse38 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse40 (select .cse38 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= 19 (let ((.cse39 (select .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse37 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse38 .cse7 (+ .cse39 .cse40))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse39 .cse40))) (< v_ArrVal_427 .cse30) (< 1 .cse40))))))) .cse19)))) (or (forall ((v_ArrVal_427 Int)) (let ((.cse48 (store (store .cse11 .cse49 .cse43) .cse18 v_ArrVal_427))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse48))) (let ((.cse45 (select .cse44 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse46 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= 19 (let ((.cse47 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse45 .cse7 (+ .cse46 .cse47))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse46 .cse47))) (< v_ArrVal_427 .cse30) (< 1 .cse46))))))) .cse25)))) (or (let ((.cse51 (+ 6 .cse28))) (and (or .cse2 (forall ((v_ArrVal_427 Int)) (let ((.cse56 (store .cse11 .cse12 v_ArrVal_427))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse56))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse53 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< v_ArrVal_427 .cse51) (= 19 (let ((.cse52 (select .cse56 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse52 .cse53 (select (select (store .cse54 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse55 .cse7 (+ .cse52 .cse53))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (< 1 .cse53)))))))) (or .cse19 (forall ((v_ArrVal_427 Int)) (let ((.cse61 (store .cse11 .cse18 v_ArrVal_427))) (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse61))) (let ((.cse59 (select .cse58 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse60 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< v_ArrVal_427 .cse51) (= 19 (let ((.cse57 (select .cse61 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse57 (select (select (store .cse58 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse59 .cse7 (+ .cse57 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse60))) (< 1 .cse60)))))))))) .cse25) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (<= 18 (select .cse11 16)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse62 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (and (= 12 (select .cse62 8)) (<= 18 (select .cse62 16)) (= 6 (select .cse62 0))))) (let ((.cse63 (store .cse0 .cse26 (+ (select .cse0 .cse64) .cse20)))) (or (= 19 (select .cse63 .cse22)) .cse1 (< 1 (select .cse63 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (= 7 (select .cse0 8)) (or .cse23 (and (let ((.cse65 (store .cse21 .cse26 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) .cse42) .cse66 .cse67)))) (or .cse1 (= 19 (select .cse65 .cse22)) (< 1 (select .cse65 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse68 (let ((.cse69 (store .cse0 .cse27 .cse70))) (store .cse69 .cse26 (+ .cse66 .cse67 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse69) |c_ULTIMATE.start_main_~a~0#1.base|) .cse49)))))) (or (< 1 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse25 (= 19 (select .cse68 .cse22)))))) (= (select .cse0 0) 1) (let ((.cse71 (store .cse72 .cse26 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse72) |c_ULTIMATE.start_main_~a~0#1.base|) .cse42) .cse73 .cse50)))) (or (< 1 (select .cse71 |c_ULTIMATE.start_main_~b~0#1.offset|)) (= 19 (select .cse71 .cse22)) .cse29)) (= (select .cse11 8) 12) (or (< 1 (select .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (= (select .cse72 .cse22) 19) .cse29) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or (and (or .cse1 (forall ((v_ArrVal_427 Int)) (let ((.cse78 (store .cse11 .cse42 v_ArrVal_427))) (let ((.cse75 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse78))) (let ((.cse76 (select .cse75 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse74 (select .cse76 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< 1 .cse74) (< v_ArrVal_427 .cse43) (= 19 (let ((.cse77 (select .cse78 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse75 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse76 .cse7 (+ .cse77 .cse74))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse77 .cse74)))))))))) (or (forall ((v_ArrVal_427 Int)) (let ((.cse83 (store .cse11 .cse49 v_ArrVal_427))) (let ((.cse79 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse83))) (let ((.cse80 (select .cse79 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse81 (select .cse80 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= (let ((.cse82 (select .cse83 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse79 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse80 .cse7 (+ .cse81 .cse82))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse81 .cse82)) 19) (< 1 .cse81) (< v_ArrVal_427 .cse43))))))) .cse25)) .cse29) (= (select .cse11 0) 6) (or (and (or .cse25 (forall ((v_ArrVal_427 Int)) (let ((.cse88 (store .cse11 .cse49 v_ArrVal_427))) (let ((.cse84 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse88))) (let ((.cse85 (select .cse84 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse86 (select .cse85 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= (let ((.cse87 (select .cse88 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse84 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse85 .cse7 (+ .cse86 .cse87))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse86 .cse87)) 19) (< 1 .cse86) (< v_ArrVal_427 .cse89)))))))) (or .cse1 (forall ((v_ArrVal_427 Int)) (let ((.cse94 (store .cse11 .cse42 v_ArrVal_427))) (let ((.cse91 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse94))) (let ((.cse92 (select .cse91 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse90 (select .cse92 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< 1 .cse90) (< v_ArrVal_427 .cse89) (= 19 (let ((.cse93 (select .cse94 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse91 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse92 .cse7 (+ .cse93 .cse90))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse93 .cse90))))))))))) .cse23) (or (let ((.cse100 (+ .cse66 12))) (and (or (let ((.cse101 (store .cse11 .cse49 .cse89))) (and (or .cse2 (forall ((v_ArrVal_427 Int)) (let ((.cse99 (store .cse101 .cse12 v_ArrVal_427))) (let ((.cse95 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse99))) (let ((.cse96 (select .cse95 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse98 (select .cse96 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= 19 (let ((.cse97 (select .cse99 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse95 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse96 .cse7 (+ .cse97 .cse98))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse97 .cse98))) (< v_ArrVal_427 .cse100) (< 1 .cse98)))))))) (or (forall ((v_ArrVal_427 Int)) (let ((.cse106 (store .cse101 .cse18 v_ArrVal_427))) (let ((.cse104 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse106))) (let ((.cse105 (select .cse104 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse102 (select .cse105 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< 1 .cse102) (< v_ArrVal_427 .cse100) (= 19 (let ((.cse103 (select .cse106 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse103 (select (select (store .cse104 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse105 .cse7 (+ .cse103 .cse102))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse102))))))))) .cse19))) .cse25) (or .cse1 (forall ((v_ArrVal_427 Int)) (let ((.cse111 (store (store .cse11 .cse42 .cse89) .cse12 v_ArrVal_427))) (let ((.cse108 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse111))) (let ((.cse109 (select .cse108 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse107 (select .cse109 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (< 1 .cse107) (= 19 (let ((.cse110 (select .cse111 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse107 (select (select (store .cse108 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse109 .cse7 (+ .cse107 .cse110))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse110))) (< v_ArrVal_427 .cse100)))))))))) .cse23))))))) is different from true