./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/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_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/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_f3630e52-a256-40d1-9bb2-8ee752b26396/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 658f2400ca36ee3160bcd87c02298e6e5f853b7797a1acd98ab1a5dc86f78753 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:35,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:35,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:39:35,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:35,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:35,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:35,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:35,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:35,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:35,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:35,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:35,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:35,541 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:35,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:35,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:35,544 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:35,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:35,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:35,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:35,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:35,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:35,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:35,548 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:35,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:35,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:35,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:35,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:35,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:35,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:35,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:35,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:35,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:35,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:35,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:35,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:35,554 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:35,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:35,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:35,555 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:35,556 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_f3630e52-a256-40d1-9bb2-8ee752b26396/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 658f2400ca36ee3160bcd87c02298e6e5f853b7797a1acd98ab1a5dc86f78753 [2023-11-19 07:39:35,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:35,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:35,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:35,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:35,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:35,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-45.i [2023-11-19 07:39:39,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:39,448 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:39,454 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-45.i [2023-11-19 07:39:39,482 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/data/426e1f421/e47c028fce6c4cac84fcf1b965d6fa5f/FLAGc3806a561 [2023-11-19 07:39:39,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/data/426e1f421/e47c028fce6c4cac84fcf1b965d6fa5f [2023-11-19 07:39:39,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:39,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:39,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:39,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:39,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:39,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:39" (1/1) ... [2023-11-19 07:39:39,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cde1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:39, skipping insertion in model container [2023-11-19 07:39:39,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:39" (1/1) ... [2023-11-19 07:39:39,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:39,727 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_f3630e52-a256-40d1-9bb2-8ee752b26396/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-45.i[916,929] [2023-11-19 07:39:39,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:39,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:40,003 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_f3630e52-a256-40d1-9bb2-8ee752b26396/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-45.i[916,929] [2023-11-19 07:39:40,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:40,151 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:40,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40 WrapperNode [2023-11-19 07:39:40,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:40,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:40,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:40,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:40,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,297 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 802 [2023-11-19 07:39:40,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:40,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:40,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:40,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:40,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:40,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:40,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:40,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:40,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (1/1) ... [2023-11-19 07:39:40,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:40,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:40,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:40,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:39:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:39:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:40,750 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:40,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:41,970 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:42,001 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:42,002 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:39:42,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:42 BoogieIcfgContainer [2023-11-19 07:39:42,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:42,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:42,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:42,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:42,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:39" (1/3) ... [2023-11-19 07:39:42,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41315f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:42, skipping insertion in model container [2023-11-19 07:39:42,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:40" (2/3) ... [2023-11-19 07:39:42,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41315f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:42, skipping insertion in model container [2023-11-19 07:39:42,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:42" (3/3) ... [2023-11-19 07:39:42,060 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-45.i [2023-11-19 07:39:42,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:42,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:39:42,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:42,159 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;@3730603c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:42,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:39:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 216 states have (on average 1.587962962962963) internal successors, (343), 217 states have internal predecessors, (343), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-19 07:39:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-11-19 07:39:42,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:42,224 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:42,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:42,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash 14622225, now seen corresponding path program 1 times [2023-11-19 07:39:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:42,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785946446] [2023-11-19 07:39:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:42,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785946446] [2023-11-19 07:39:42,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:39:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955741336] [2023-11-19 07:39:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:42,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:42,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:39:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:43,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:39:43,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 26450 trivial. 0 not checked. [2023-11-19 07:39:43,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955741336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:43,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:43,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599554191] [2023-11-19 07:39:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:43,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:43,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:43,660 INFO L87 Difference]: Start difference. First operand has 335 states, 216 states have (on average 1.587962962962963) internal successors, (343), 217 states have internal predecessors, (343), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 2 states have call successors, (116) [2023-11-19 07:39:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:43,744 INFO L93 Difference]: Finished difference Result 663 states and 1260 transitions. [2023-11-19 07:39:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:43,750 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 2 states have call successors, (116) Word has length 736 [2023-11-19 07:39:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:43,766 INFO L225 Difference]: With dead ends: 663 [2023-11-19 07:39:43,767 INFO L226 Difference]: Without dead ends: 331 [2023-11-19 07:39:43,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 735 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 07:39:43,783 INFO L413 NwaCegarLoop]: 567 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, 567 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 07:39:43,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-19 07:39:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-11-19 07:39:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 213 states have (on average 1.5727699530516432) internal successors, (335), 213 states have internal predecessors, (335), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-19 07:39:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 567 transitions. [2023-11-19 07:39:43,937 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 567 transitions. Word has length 736 [2023-11-19 07:39:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:43,940 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 567 transitions. [2023-11-19 07:39:43,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 2 states have call successors, (116) [2023-11-19 07:39:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 567 transitions. [2023-11-19 07:39:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-11-19 07:39:43,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:43,981 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:44,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:39:44,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:44,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:44,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash 946226245, now seen corresponding path program 1 times [2023-11-19 07:39:44,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:44,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053386005] [2023-11-19 07:39:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:44,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683845014] [2023-11-19 07:39:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:44,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:44,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:44,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:44,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:39:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:44,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:39:44,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-19 07:39:45,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:45,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053386005] [2023-11-19 07:39:45,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683845014] [2023-11-19 07:39:45,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683845014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:45,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320006659] [2023-11-19 07:39:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:45,065 INFO L87 Difference]: Start difference. First operand 331 states and 567 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:45,140 INFO L93 Difference]: Finished difference Result 828 states and 1433 transitions. [2023-11-19 07:39:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:45,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 736 [2023-11-19 07:39:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:45,151 INFO L225 Difference]: With dead ends: 828 [2023-11-19 07:39:45,151 INFO L226 Difference]: Without dead ends: 500 [2023-11-19 07:39:45,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:45,155 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 305 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-19 07:39:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 497. [2023-11-19 07:39:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 362 states have (on average 1.6629834254143647) internal successors, (602), 363 states have internal predecessors, (602), 132 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2023-11-19 07:39:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 866 transitions. [2023-11-19 07:39:45,230 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 866 transitions. Word has length 736 [2023-11-19 07:39:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:45,233 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 866 transitions. [2023-11-19 07:39:45,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 866 transitions. [2023-11-19 07:39:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-11-19 07:39:45,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:45,245 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:45,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:45,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:45,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:45,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash 359950023, now seen corresponding path program 1 times [2023-11-19 07:39:45,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:45,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264829006] [2023-11-19 07:39:45,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:45,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:45,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475284052] [2023-11-19 07:39:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:45,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:45,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:45,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:45,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:39:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:46,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:39:46,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-19 07:39:46,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:46,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264829006] [2023-11-19 07:39:46,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:46,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475284052] [2023-11-19 07:39:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475284052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:46,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:46,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61475774] [2023-11-19 07:39:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:46,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:46,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:46,302 INFO L87 Difference]: Start difference. First operand 497 states and 866 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:46,423 INFO L93 Difference]: Finished difference Result 1275 states and 2217 transitions. [2023-11-19 07:39:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:46,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 736 [2023-11-19 07:39:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:46,436 INFO L225 Difference]: With dead ends: 1275 [2023-11-19 07:39:46,436 INFO L226 Difference]: Without dead ends: 781 [2023-11-19 07:39:46,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:46,440 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 278 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:46,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1118 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-11-19 07:39:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 778. [2023-11-19 07:39:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 580 states have (on average 1.6586206896551725) internal successors, (962), 583 states have internal predecessors, (962), 193 states have call successors, (193), 4 states have call predecessors, (193), 4 states have return successors, (193), 190 states have call predecessors, (193), 193 states have call successors, (193) [2023-11-19 07:39:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1348 transitions. [2023-11-19 07:39:46,529 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1348 transitions. Word has length 736 [2023-11-19 07:39:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:46,531 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1348 transitions. [2023-11-19 07:39:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1348 transitions. [2023-11-19 07:39:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-11-19 07:39:46,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:46,542 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:46,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:46,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:46,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1101955523, now seen corresponding path program 1 times [2023-11-19 07:39:46,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:46,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188828952] [2023-11-19 07:39:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:46,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:46,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492074005] [2023-11-19 07:39:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:46,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:46,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:46,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:39:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:47,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:39:47,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-19 07:39:47,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188828952] [2023-11-19 07:39:47,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492074005] [2023-11-19 07:39:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492074005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:47,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197381470] [2023-11-19 07:39:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:47,605 INFO L87 Difference]: Start difference. First operand 778 states and 1348 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:47,713 INFO L93 Difference]: Finished difference Result 2046 states and 3507 transitions. [2023-11-19 07:39:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:47,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 736 [2023-11-19 07:39:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:47,730 INFO L225 Difference]: With dead ends: 2046 [2023-11-19 07:39:47,731 INFO L226 Difference]: Without dead ends: 1271 [2023-11-19 07:39:47,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:47,737 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 334 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:47,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1122 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2023-11-19 07:39:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1268. [2023-11-19 07:39:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 886 states have (on average 1.5914221218961626) internal successors, (1410), 893 states have internal predecessors, (1410), 373 states have call successors, (373), 8 states have call predecessors, (373), 8 states have return successors, (373), 366 states have call predecessors, (373), 373 states have call successors, (373) [2023-11-19 07:39:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 2156 transitions. [2023-11-19 07:39:47,920 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 2156 transitions. Word has length 736 [2023-11-19 07:39:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:47,922 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 2156 transitions. [2023-11-19 07:39:47,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 2156 transitions. [2023-11-19 07:39:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-11-19 07:39:47,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:47,933 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:47,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:48,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:48,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:48,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -892189183, now seen corresponding path program 1 times [2023-11-19 07:39:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86730009] [2023-11-19 07:39:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:48,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:48,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:48,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607435085] [2023-11-19 07:39:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:48,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:48,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:48,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:48,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:39:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:48,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:39:48,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-19 07:39:48,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:48,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86730009] [2023-11-19 07:39:48,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607435085] [2023-11-19 07:39:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607435085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472045233] [2023-11-19 07:39:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:48,939 INFO L87 Difference]: Start difference. First operand 1268 states and 2156 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:49,109 INFO L93 Difference]: Finished difference Result 3774 states and 6414 transitions. [2023-11-19 07:39:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 736 [2023-11-19 07:39:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:49,132 INFO L225 Difference]: With dead ends: 3774 [2023-11-19 07:39:49,132 INFO L226 Difference]: Without dead ends: 2509 [2023-11-19 07:39:49,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:49,139 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 556 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:49,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1121 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2023-11-19 07:39:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2507. [2023-11-19 07:39:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1744 states have (on average 1.573394495412844) internal successors, (2744), 1758 states have internal predecessors, (2744), 746 states have call successors, (746), 16 states have call predecessors, (746), 16 states have return successors, (746), 732 states have call predecessors, (746), 746 states have call successors, (746) [2023-11-19 07:39:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4236 transitions. [2023-11-19 07:39:49,552 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4236 transitions. Word has length 736 [2023-11-19 07:39:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:49,553 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 4236 transitions. [2023-11-19 07:39:49,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4236 transitions. [2023-11-19 07:39:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2023-11-19 07:39:49,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:49,564 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:49,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:39:49,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:49,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:49,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2001419085, now seen corresponding path program 1 times [2023-11-19 07:39:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420388170] [2023-11-19 07:39:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:49,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:49,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316099635] [2023-11-19 07:39:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:49,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:49,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:39:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:50,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:39:50,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-19 07:39:52,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420388170] [2023-11-19 07:39:52,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316099635] [2023-11-19 07:39:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316099635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:52,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:52,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:52,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573715608] [2023-11-19 07:39:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:52,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:52,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:52,971 INFO L87 Difference]: Start difference. First operand 2507 states and 4236 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:54,173 INFO L93 Difference]: Finished difference Result 5597 states and 9310 transitions. [2023-11-19 07:39:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 737 [2023-11-19 07:39:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:54,202 INFO L225 Difference]: With dead ends: 5597 [2023-11-19 07:39:54,203 INFO L226 Difference]: Without dead ends: 3093 [2023-11-19 07:39:54,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:39:54,216 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 631 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:54,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1180 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:39:54,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2023-11-19 07:39:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3075. [2023-11-19 07:39:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 2136 states have (on average 1.5131086142322097) internal successors, (3232), 2166 states have internal predecessors, (3232), 906 states have call successors, (906), 32 states have call predecessors, (906), 32 states have return successors, (906), 876 states have call predecessors, (906), 906 states have call successors, (906) [2023-11-19 07:39:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 5044 transitions. [2023-11-19 07:39:54,764 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 5044 transitions. Word has length 737 [2023-11-19 07:39:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:54,766 INFO L495 AbstractCegarLoop]: Abstraction has 3075 states and 5044 transitions. [2023-11-19 07:39:54,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:39:54,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 5044 transitions. [2023-11-19 07:39:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2023-11-19 07:39:54,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:54,776 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:54,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:39:55,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:55,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash -545730475, now seen corresponding path program 1 times [2023-11-19 07:39:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:55,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637458363] [2023-11-19 07:39:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:55,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:55,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857035040] [2023-11-19 07:39:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:55,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:55,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:55,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:39:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:55,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:39:55,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13933 proven. 156 refuted. 0 times theorem prover too weak. 12591 trivial. 0 not checked. [2023-11-19 07:39:56,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 189 proven. 156 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-11-19 07:39:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637458363] [2023-11-19 07:39:57,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857035040] [2023-11-19 07:39:57,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857035040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:57,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:57,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:39:57,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882082834] [2023-11-19 07:39:57,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:57,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:39:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:39:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:39:57,519 INFO L87 Difference]: Start difference. First operand 3075 states and 5044 transitions. Second operand has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 5 states have call successors, (168), 3 states have call predecessors, (168), 5 states have return successors, (169), 5 states have call predecessors, (169), 5 states have call successors, (169) [2023-11-19 07:39:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:58,530 INFO L93 Difference]: Finished difference Result 6243 states and 10173 transitions. [2023-11-19 07:39:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:39:58,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 5 states have call successors, (168), 3 states have call predecessors, (168), 5 states have return successors, (169), 5 states have call predecessors, (169), 5 states have call successors, (169) Word has length 737 [2023-11-19 07:39:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:58,559 INFO L225 Difference]: With dead ends: 6243 [2023-11-19 07:39:58,560 INFO L226 Difference]: Without dead ends: 3171 [2023-11-19 07:39:58,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1464 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:39:58,572 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 313 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:58,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1033 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:39:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-19 07:39:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3107. [2023-11-19 07:39:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2160 states have (on average 1.4962962962962962) internal successors, (3232), 2190 states have internal predecessors, (3232), 906 states have call successors, (906), 40 states have call predecessors, (906), 40 states have return successors, (906), 876 states have call predecessors, (906), 906 states have call successors, (906) [2023-11-19 07:39:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5044 transitions. [2023-11-19 07:39:59,184 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5044 transitions. Word has length 737 [2023-11-19 07:39:59,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:59,185 INFO L495 AbstractCegarLoop]: Abstraction has 3107 states and 5044 transitions. [2023-11-19 07:39:59,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 5 states have call successors, (168), 3 states have call predecessors, (168), 5 states have return successors, (169), 5 states have call predecessors, (169), 5 states have call successors, (169) [2023-11-19 07:39:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5044 transitions. [2023-11-19 07:39:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2023-11-19 07:39:59,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:59,202 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:59,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:59,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:59,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1389735977, now seen corresponding path program 1 times [2023-11-19 07:39:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39261878] [2023-11-19 07:39:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:59,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429802264] [2023-11-19 07:39:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:59,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:59,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:59,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:59,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:40:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:00,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:40:00,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13215 proven. 195 refuted. 0 times theorem prover too weak. 13270 trivial. 0 not checked. [2023-11-19 07:40:00,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 150 proven. 195 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-11-19 07:40:01,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39261878] [2023-11-19 07:40:01,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429802264] [2023-11-19 07:40:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429802264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:01,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:01,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:40:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734675243] [2023-11-19 07:40:01,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:01,398 INFO L87 Difference]: Start difference. First operand 3107 states and 5044 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182) [2023-11-19 07:40:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:02,451 INFO L93 Difference]: Finished difference Result 6299 states and 10169 transitions. [2023-11-19 07:40:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:40:02,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182) Word has length 737 [2023-11-19 07:40:02,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:02,478 INFO L225 Difference]: With dead ends: 6299 [2023-11-19 07:40:02,478 INFO L226 Difference]: Without dead ends: 3195 [2023-11-19 07:40:02,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1466 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:40:02,489 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 559 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:02,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1067 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:40:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2023-11-19 07:40:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3123. [2023-11-19 07:40:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2172 states have (on average 1.4751381215469612) internal successors, (3204), 2202 states have internal predecessors, (3204), 906 states have call successors, (906), 44 states have call predecessors, (906), 44 states have return successors, (906), 876 states have call predecessors, (906), 906 states have call successors, (906) [2023-11-19 07:40:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5016 transitions. [2023-11-19 07:40:03,052 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5016 transitions. Word has length 737 [2023-11-19 07:40:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:03,054 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5016 transitions. [2023-11-19 07:40:03,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182) [2023-11-19 07:40:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5016 transitions. [2023-11-19 07:40:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2023-11-19 07:40:03,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:03,064 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:03,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:03,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:03,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1563386333, now seen corresponding path program 1 times [2023-11-19 07:40:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459386186] [2023-11-19 07:40:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:03,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:03,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569331367] [2023-11-19 07:40:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:03,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:03,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:03,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:40:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:03,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:03,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-19 07:40:04,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:04,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459386186] [2023-11-19 07:40:04,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569331367] [2023-11-19 07:40:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569331367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:04,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:04,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848666933] [2023-11-19 07:40:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:04,088 INFO L87 Difference]: Start difference. First operand 3123 states and 5016 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:40:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:05,994 INFO L93 Difference]: Finished difference Result 15547 states and 24956 transitions. [2023-11-19 07:40:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 738 [2023-11-19 07:40:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:06,084 INFO L225 Difference]: With dead ends: 15547 [2023-11-19 07:40:06,085 INFO L226 Difference]: Without dead ends: 12427 [2023-11-19 07:40:06,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:06,100 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 1453 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:06,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 2872 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:40:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12427 states. [2023-11-19 07:40:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12427 to 12421. [2023-11-19 07:40:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12421 states, 8620 states have (on average 1.4593967517401392) internal successors, (12580), 8740 states have internal predecessors, (12580), 3624 states have call successors, (3624), 176 states have call predecessors, (3624), 176 states have return successors, (3624), 3504 states have call predecessors, (3624), 3624 states have call successors, (3624) [2023-11-19 07:40:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12421 states to 12421 states and 19828 transitions. [2023-11-19 07:40:08,564 INFO L78 Accepts]: Start accepts. Automaton has 12421 states and 19828 transitions. Word has length 738 [2023-11-19 07:40:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:08,566 INFO L495 AbstractCegarLoop]: Abstraction has 12421 states and 19828 transitions. [2023-11-19 07:40:08,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-19 07:40:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 12421 states and 19828 transitions. [2023-11-19 07:40:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2023-11-19 07:40:08,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:08,582 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:08,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:08,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 948774883, now seen corresponding path program 1 times [2023-11-19 07:40:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143765165] [2023-11-19 07:40:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:08,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:08,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570348433] [2023-11-19 07:40:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:08,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:08,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:08,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:40:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:09,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:40:09,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 5265 proven. 36 refuted. 0 times theorem prover too weak. 21379 trivial. 0 not checked. [2023-11-19 07:40:09,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 309 proven. 36 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-11-19 07:40:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143765165] [2023-11-19 07:40:10,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570348433] [2023-11-19 07:40:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570348433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:10,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:10,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:40:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553706113] [2023-11-19 07:40:10,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:10,301 INFO L87 Difference]: Start difference. First operand 12421 states and 19828 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-11-19 07:40:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:12,826 INFO L93 Difference]: Finished difference Result 20108 states and 32234 transitions. [2023-11-19 07:40:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:40:12,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 738 [2023-11-19 07:40:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:12,867 INFO L225 Difference]: With dead ends: 20108 [2023-11-19 07:40:12,867 INFO L226 Difference]: Without dead ends: 7690 [2023-11-19 07:40:12,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1468 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:40:12,905 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 629 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:12,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1493 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:40:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2023-11-19 07:40:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7537. [2023-11-19 07:40:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7537 states, 5466 states have (on average 1.5107939992682033) internal successors, (8258), 5523 states have internal predecessors, (8258), 1967 states have call successors, (1967), 103 states have call predecessors, (1967), 103 states have return successors, (1967), 1910 states have call predecessors, (1967), 1967 states have call successors, (1967) [2023-11-19 07:40:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7537 states to 7537 states and 12192 transitions. [2023-11-19 07:40:14,414 INFO L78 Accepts]: Start accepts. Automaton has 7537 states and 12192 transitions. Word has length 738 [2023-11-19 07:40:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:14,416 INFO L495 AbstractCegarLoop]: Abstraction has 7537 states and 12192 transitions. [2023-11-19 07:40:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-11-19 07:40:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7537 states and 12192 transitions. [2023-11-19 07:40:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2023-11-19 07:40:14,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:14,428 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:14,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:14,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:40:14,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:14,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:14,651 INFO L85 PathProgramCache]: Analyzing trace with hash 792351459, now seen corresponding path program 1 times [2023-11-19 07:40:14,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731283988] [2023-11-19 07:40:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:14,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:14,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075672504] [2023-11-19 07:40:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:14,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:14,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:14,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3630e52-a256-40d1-9bb2-8ee752b26396/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:40:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:15,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:40:15,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 5799 proven. 303 refuted. 0 times theorem prover too weak. 20578 trivial. 0 not checked. [2023-11-19 07:40:18,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 42 proven. 303 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-11-19 07:40:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731283988] [2023-11-19 07:40:19,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075672504] [2023-11-19 07:40:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075672504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:19,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-19 07:40:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858635866] [2023-11-19 07:40:19,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:19,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:40:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:40:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:40:19,573 INFO L87 Difference]: Start difference. First operand 7537 states and 12192 transitions. Second operand has 12 states, 12 states have (on average 26.25) internal successors, (315), 12 states have internal predecessors, (315), 4 states have call successors, (232), 3 states have call predecessors, (232), 5 states have return successors, (232), 4 states have call predecessors, (232), 4 states have call successors, (232)