./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/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_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/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_72f022bf-2dc3-4f26-8ac1-7942082bdd28/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 39f35a37b269351a16278221a7bbfcc0d2e5f28c28376776cbcd4a03ccd8aa74 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:26,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:26,100 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:34:26,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:26,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:26,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:26,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:26,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:26,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:26,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:26,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:26,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:26,142 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:26,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:26,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:34:26,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:26,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:26,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:26,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:26,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:34:26,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:26,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:34:26,148 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:26,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:34:26,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:26,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:26,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:26,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:26,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:26,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:26,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:26,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:34:26,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:26,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:26,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:26,154 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:34:26,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:26,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:26,156 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:26,156 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_72f022bf-2dc3-4f26-8ac1-7942082bdd28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39f35a37b269351a16278221a7bbfcc0d2e5f28c28376776cbcd4a03ccd8aa74 [2023-11-19 07:34:26,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:26,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:26,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:26,528 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:26,528 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:26,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-11-19 07:34:29,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:30,119 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:30,122 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-11-19 07:34:30,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/data/8a2dec53d/4c4b67cd608a4726aedcfca68ec501ff/FLAGbb2a92c31 [2023-11-19 07:34:30,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/data/8a2dec53d/4c4b67cd608a4726aedcfca68ec501ff [2023-11-19 07:34:30,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:30,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:30,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:30,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:30,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:30,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:30,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d36c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30, skipping insertion in model container [2023-11-19 07:34:30,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:30,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:30,404 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_72f022bf-2dc3-4f26-8ac1-7942082bdd28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-11-19 07:34:30,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:30,696 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:30,708 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_72f022bf-2dc3-4f26-8ac1-7942082bdd28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-11-19 07:34:30,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:30,861 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:30,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30 WrapperNode [2023-11-19 07:34:30,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:30,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:30,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:30,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:30,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:30,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,055 INFO L138 Inliner]: procedures = 26, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 866 [2023-11-19 07:34:31,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:31,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:31,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:31,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:31,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:31,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:31,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:31,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:31,221 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (1/1) ... [2023-11-19 07:34:31,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:31,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:34:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:34:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:31,510 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:31,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:32,810 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:32,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:32,824 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:34:32,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:32 BoogieIcfgContainer [2023-11-19 07:34:32,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:32,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:32,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:32,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:32,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:30" (1/3) ... [2023-11-19 07:34:32,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3812b937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:32, skipping insertion in model container [2023-11-19 07:34:32,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:30" (2/3) ... [2023-11-19 07:34:32,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3812b937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:32, skipping insertion in model container [2023-11-19 07:34:32,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:32" (3/3) ... [2023-11-19 07:34:32,856 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-11-19 07:34:32,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:32,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:34:32,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:32,965 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;@5bda5fc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:32,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:34:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 233 states have (on average 1.6180257510729614) internal successors, (377), 234 states have internal predecessors, (377), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 07:34:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-11-19 07:34:33,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:33,036 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:33,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:33,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1959650007, now seen corresponding path program 1 times [2023-11-19 07:34:33,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98157074] [2023-11-19 07:34:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98157074] [2023-11-19 07:34:33,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:34:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895158002] [2023-11-19 07:34:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:33,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:33,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:33,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:33,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:34,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:34:34,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 25538 trivial. 0 not checked. [2023-11-19 07:34:34,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895158002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:34,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:34,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577670145] [2023-11-19 07:34:34,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:34:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:34,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:34:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:34:34,356 INFO L87 Difference]: Start difference. First operand has 350 states, 233 states have (on average 1.6180257510729614) internal successors, (377), 234 states have internal predecessors, (377), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-19 07:34:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:34,437 INFO L93 Difference]: Finished difference Result 693 states and 1318 transitions. [2023-11-19 07:34:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:34:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) Word has length 730 [2023-11-19 07:34:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:34,456 INFO L225 Difference]: With dead ends: 693 [2023-11-19 07:34:34,456 INFO L226 Difference]: Without dead ends: 346 [2023-11-19 07:34:34,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 729 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 07:34:34,469 INFO L413 NwaCegarLoop]: 596 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, 596 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 07:34:34,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-19 07:34:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-11-19 07:34:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 230 states have (on average 1.6) internal successors, (368), 230 states have internal predecessors, (368), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 07:34:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 596 transitions. [2023-11-19 07:34:34,604 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 596 transitions. Word has length 730 [2023-11-19 07:34:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:34,606 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 596 transitions. [2023-11-19 07:34:34,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-19 07:34:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 596 transitions. [2023-11-19 07:34:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-11-19 07:34:34,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:34,639 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:34,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:34:34,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash -124733659, now seen corresponding path program 1 times [2023-11-19 07:34:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173769670] [2023-11-19 07:34:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:34,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:35,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095832858] [2023-11-19 07:34:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:35,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:35,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:35,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:35,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:35,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:35,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:35,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173769670] [2023-11-19 07:34:35,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095832858] [2023-11-19 07:34:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095832858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:35,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:35,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248772395] [2023-11-19 07:34:35,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:35,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:35,765 INFO L87 Difference]: Start difference. First operand 346 states and 596 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:35,868 INFO L93 Difference]: Finished difference Result 690 states and 1191 transitions. [2023-11-19 07:34:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 730 [2023-11-19 07:34:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:35,882 INFO L225 Difference]: With dead ends: 690 [2023-11-19 07:34:35,883 INFO L226 Difference]: Without dead ends: 347 [2023-11-19 07:34:35,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 728 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 07:34:35,886 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 0 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:35,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-19 07:34:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-19 07:34:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 231 states have (on average 1.5974025974025974) internal successors, (369), 231 states have internal predecessors, (369), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 07:34:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 597 transitions. [2023-11-19 07:34:35,977 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 597 transitions. Word has length 730 [2023-11-19 07:34:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:35,982 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 597 transitions. [2023-11-19 07:34:35,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 597 transitions. [2023-11-19 07:34:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-19 07:34:35,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:35,996 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:36,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:36,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:34:36,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:36,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1519824376, now seen corresponding path program 1 times [2023-11-19 07:34:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:36,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817775230] [2023-11-19 07:34:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:36,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:36,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:36,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391958515] [2023-11-19 07:34:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:36,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:36,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:36,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:36,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:36,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:36,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:36,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817775230] [2023-11-19 07:34:36,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391958515] [2023-11-19 07:34:36,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391958515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:36,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110898031] [2023-11-19 07:34:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:37,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:37,005 INFO L87 Difference]: Start difference. First operand 347 states and 597 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:37,094 INFO L93 Difference]: Finished difference Result 929 states and 1601 transitions. [2023-11-19 07:34:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:37,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 731 [2023-11-19 07:34:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:37,103 INFO L225 Difference]: With dead ends: 929 [2023-11-19 07:34:37,103 INFO L226 Difference]: Without dead ends: 585 [2023-11-19 07:34:37,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 729 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 07:34:37,107 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 399 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:37,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1443 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-19 07:34:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 582. [2023-11-19 07:34:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 392 states have (on average 1.6020408163265305) internal successors, (628), 393 states have internal predecessors, (628), 187 states have call successors, (187), 2 states have call predecessors, (187), 2 states have return successors, (187), 186 states have call predecessors, (187), 187 states have call successors, (187) [2023-11-19 07:34:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1002 transitions. [2023-11-19 07:34:37,204 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1002 transitions. Word has length 731 [2023-11-19 07:34:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:37,206 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 1002 transitions. [2023-11-19 07:34:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1002 transitions. [2023-11-19 07:34:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 07:34:37,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:37,216 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:37,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:37,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:37,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash -340521496, now seen corresponding path program 1 times [2023-11-19 07:34:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:37,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021112874] [2023-11-19 07:34:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:37,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:37,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:37,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588180560] [2023-11-19 07:34:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:37,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:37,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:37,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:37,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:38,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:38,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:38,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021112874] [2023-11-19 07:34:38,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588180560] [2023-11-19 07:34:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588180560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:38,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212819877] [2023-11-19 07:34:38,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:38,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:38,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:38,234 INFO L87 Difference]: Start difference. First operand 582 states and 1002 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:38,324 INFO L93 Difference]: Finished difference Result 1168 states and 2006 transitions. [2023-11-19 07:34:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 07:34:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:38,331 INFO L225 Difference]: With dead ends: 1168 [2023-11-19 07:34:38,331 INFO L226 Difference]: Without dead ends: 589 [2023-11-19 07:34:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 730 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 07:34:38,338 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 375 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:38,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1199 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-19 07:34:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 435. [2023-11-19 07:34:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 318 states have (on average 1.6572327044025157) internal successors, (527), 318 states have internal predecessors, (527), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 07:34:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 755 transitions. [2023-11-19 07:34:38,402 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 755 transitions. Word has length 732 [2023-11-19 07:34:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:38,406 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 755 transitions. [2023-11-19 07:34:38,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 755 transitions. [2023-11-19 07:34:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 07:34:38,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:38,415 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:38,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:38,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:38,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:38,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1230556504, now seen corresponding path program 1 times [2023-11-19 07:34:38,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280372727] [2023-11-19 07:34:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:38,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227333902] [2023-11-19 07:34:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:38,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:38,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:34:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:39,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:39,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:39,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:39,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:39,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280372727] [2023-11-19 07:34:39,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:39,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227333902] [2023-11-19 07:34:39,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227333902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:39,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:39,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105728505] [2023-11-19 07:34:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:39,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:39,392 INFO L87 Difference]: Start difference. First operand 435 states and 755 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:39,473 INFO L93 Difference]: Finished difference Result 1299 states and 2259 transitions. [2023-11-19 07:34:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 07:34:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:39,483 INFO L225 Difference]: With dead ends: 1299 [2023-11-19 07:34:39,483 INFO L226 Difference]: Without dead ends: 867 [2023-11-19 07:34:39,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 730 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 07:34:39,486 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 583 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:39,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1195 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-11-19 07:34:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2023-11-19 07:34:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 632 states have (on average 1.6518987341772151) internal successors, (1044), 632 states have internal predecessors, (1044), 228 states have call successors, (228), 4 states have call predecessors, (228), 4 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-19 07:34:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1500 transitions. [2023-11-19 07:34:39,601 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1500 transitions. Word has length 732 [2023-11-19 07:34:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:39,603 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1500 transitions. [2023-11-19 07:34:39,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1500 transitions. [2023-11-19 07:34:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 07:34:39,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:39,612 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:39,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:39,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:39,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1015022950, now seen corresponding path program 1 times [2023-11-19 07:34:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216895700] [2023-11-19 07:34:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:39,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:39,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072648096] [2023-11-19 07:34:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:39,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:39,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:39,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:34:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:40,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:40,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:40,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216895700] [2023-11-19 07:34:40,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:40,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072648096] [2023-11-19 07:34:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072648096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:40,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:40,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906679345] [2023-11-19 07:34:40,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:40,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:40,650 INFO L87 Difference]: Start difference. First operand 865 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:40,762 INFO L93 Difference]: Finished difference Result 2273 states and 3966 transitions. [2023-11-19 07:34:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 07:34:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:40,775 INFO L225 Difference]: With dead ends: 2273 [2023-11-19 07:34:40,775 INFO L226 Difference]: Without dead ends: 1411 [2023-11-19 07:34:40,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 730 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 07:34:40,780 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 312 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:40,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1158 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2023-11-19 07:34:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1407. [2023-11-19 07:34:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1104 states have (on average 1.690217391304348) internal successors, (1866), 1106 states have internal predecessors, (1866), 296 states have call successors, (296), 6 states have call predecessors, (296), 6 states have return successors, (296), 294 states have call predecessors, (296), 296 states have call successors, (296) [2023-11-19 07:34:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2458 transitions. [2023-11-19 07:34:40,967 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2458 transitions. Word has length 732 [2023-11-19 07:34:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:40,969 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 2458 transitions. [2023-11-19 07:34:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2458 transitions. [2023-11-19 07:34:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:34:40,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:40,979 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:41,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:41,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:41,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 961519764, now seen corresponding path program 1 times [2023-11-19 07:34:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141427745] [2023-11-19 07:34:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:41,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:41,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410081314] [2023-11-19 07:34:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:41,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:41,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:41,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:41,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:34:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:41,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:41,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:41,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141427745] [2023-11-19 07:34:41,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410081314] [2023-11-19 07:34:41,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410081314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:41,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:41,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:41,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78489103] [2023-11-19 07:34:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:41,953 INFO L87 Difference]: Start difference. First operand 1407 states and 2458 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:42,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:42,133 INFO L93 Difference]: Finished difference Result 3621 states and 6260 transitions. [2023-11-19 07:34:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-11-19 07:34:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:42,152 INFO L225 Difference]: With dead ends: 3621 [2023-11-19 07:34:42,154 INFO L226 Difference]: Without dead ends: 2217 [2023-11-19 07:34:42,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 731 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 07:34:42,159 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 335 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:42,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1178 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2023-11-19 07:34:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2213. [2023-11-19 07:34:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1654 states have (on average 1.6287787182587665) internal successors, (2694), 1660 states have internal predecessors, (2694), 546 states have call successors, (546), 12 states have call predecessors, (546), 12 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-11-19 07:34:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3786 transitions. [2023-11-19 07:34:42,420 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3786 transitions. Word has length 733 [2023-11-19 07:34:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:42,421 INFO L495 AbstractCegarLoop]: Abstraction has 2213 states and 3786 transitions. [2023-11-19 07:34:42,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3786 transitions. [2023-11-19 07:34:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:34:42,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:42,432 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:42,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:42,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:42,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:42,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash 827506258, now seen corresponding path program 1 times [2023-11-19 07:34:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061378901] [2023-11-19 07:34:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:42,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:42,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226869769] [2023-11-19 07:34:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:42,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:42,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:42,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:42,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:34:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:43,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:34:43,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 2927 proven. 18 refuted. 0 times theorem prover too weak. 22819 trivial. 0 not checked. [2023-11-19 07:34:43,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 321 proven. 18 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-19 07:34:44,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061378901] [2023-11-19 07:34:44,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:44,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226869769] [2023-11-19 07:34:44,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226869769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:44,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:34:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025309606] [2023-11-19 07:34:44,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:34:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:34:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:44,551 INFO L87 Difference]: Start difference. First operand 2213 states and 3786 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) [2023-11-19 07:34:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:45,632 INFO L93 Difference]: Finished difference Result 4463 states and 7605 transitions. [2023-11-19 07:34:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:34:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) Word has length 733 [2023-11-19 07:34:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:45,650 INFO L225 Difference]: With dead ends: 4463 [2023-11-19 07:34:45,650 INFO L226 Difference]: Without dead ends: 2253 [2023-11-19 07:34:45,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1456 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 07:34:45,659 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1010 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:45,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1196 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:34:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2023-11-19 07:34:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2229. [2023-11-19 07:34:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1666 states have (on average 1.6146458583433374) internal successors, (2690), 1672 states have internal predecessors, (2690), 546 states have call successors, (546), 16 states have call predecessors, (546), 16 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-11-19 07:34:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3782 transitions. [2023-11-19 07:34:45,922 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3782 transitions. Word has length 733 [2023-11-19 07:34:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:45,924 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3782 transitions. [2023-11-19 07:34:45,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) [2023-11-19 07:34:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3782 transitions. [2023-11-19 07:34:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:34:45,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:45,956 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:45,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:34:46,157 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:46,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1577991122, now seen corresponding path program 1 times [2023-11-19 07:34:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001282582] [2023-11-19 07:34:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:46,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509736905] [2023-11-19 07:34:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:46,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:46,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:46,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:34:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:46,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:34:46,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:46,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001282582] [2023-11-19 07:34:46,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509736905] [2023-11-19 07:34:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509736905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:46,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411253220] [2023-11-19 07:34:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:46,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:47,001 INFO L87 Difference]: Start difference. First operand 2229 states and 3782 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:47,401 INFO L93 Difference]: Finished difference Result 5993 states and 10232 transitions. [2023-11-19 07:34:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:47,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 734 [2023-11-19 07:34:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:47,430 INFO L225 Difference]: With dead ends: 5993 [2023-11-19 07:34:47,430 INFO L226 Difference]: Without dead ends: 3767 [2023-11-19 07:34:47,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 731 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 07:34:47,440 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 332 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:47,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2310 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2023-11-19 07:34:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3755. [2023-11-19 07:34:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3064 states have (on average 1.6671018276762402) internal successors, (5108), 3078 states have internal predecessors, (5108), 666 states have call successors, (666), 24 states have call predecessors, (666), 24 states have return successors, (666), 652 states have call predecessors, (666), 666 states have call successors, (666) [2023-11-19 07:34:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 6440 transitions. [2023-11-19 07:34:47,804 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 6440 transitions. Word has length 734 [2023-11-19 07:34:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:47,805 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 6440 transitions. [2023-11-19 07:34:47,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 6440 transitions. [2023-11-19 07:34:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:34:47,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:47,819 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:47,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:48,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:48,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:48,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1660244972, now seen corresponding path program 1 times [2023-11-19 07:34:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:48,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595509518] [2023-11-19 07:34:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:48,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:48,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324909873] [2023-11-19 07:34:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:48,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:48,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:48,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:48,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:34:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:48,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:48,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 7445 proven. 57 refuted. 0 times theorem prover too weak. 18262 trivial. 0 not checked. [2023-11-19 07:34:49,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 282 proven. 57 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-19 07:34:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595509518] [2023-11-19 07:34:49,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324909873] [2023-11-19 07:34:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324909873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:49,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:34:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029531748] [2023-11-19 07:34:49,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:49,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:34:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:34:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:49,805 INFO L87 Difference]: Start difference. First operand 3755 states and 6440 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-19 07:34:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:50,646 INFO L93 Difference]: Finished difference Result 7559 states and 12927 transitions. [2023-11-19 07:34:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:34:50,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 734 [2023-11-19 07:34:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:50,674 INFO L225 Difference]: With dead ends: 7559 [2023-11-19 07:34:50,675 INFO L226 Difference]: Without dead ends: 3807 [2023-11-19 07:34:50,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1460 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 07:34:50,685 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 380 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:50,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1186 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:34:50,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2023-11-19 07:34:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 3763. [2023-11-19 07:34:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3070 states have (on average 1.6553745928338761) internal successors, (5082), 3084 states have internal predecessors, (5082), 666 states have call successors, (666), 26 states have call predecessors, (666), 26 states have return successors, (666), 652 states have call predecessors, (666), 666 states have call successors, (666) [2023-11-19 07:34:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 6414 transitions. [2023-11-19 07:34:51,032 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 6414 transitions. Word has length 734 [2023-11-19 07:34:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:51,034 INFO L495 AbstractCegarLoop]: Abstraction has 3763 states and 6414 transitions. [2023-11-19 07:34:51,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-19 07:34:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 6414 transitions. [2023-11-19 07:34:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:34:51,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:51,048 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:51,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:51,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:34:51,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:51,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1722284586, now seen corresponding path program 1 times [2023-11-19 07:34:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598321858] [2023-11-19 07:34:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:51,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566822007] [2023-11-19 07:34:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:51,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:51,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:51,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:51,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:34:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:51,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:34:52,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:34:53,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:53,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598321858] [2023-11-19 07:34:53,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566822007] [2023-11-19 07:34:53,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566822007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:53,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:34:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808145192] [2023-11-19 07:34:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:53,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:34:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:34:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:53,393 INFO L87 Difference]: Start difference. First operand 3763 states and 6414 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:34:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:59,375 INFO L93 Difference]: Finished difference Result 16275 states and 27333 transitions. [2023-11-19 07:34:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:34:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 734 [2023-11-19 07:34:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:59,469 INFO L225 Difference]: With dead ends: 16275 [2023-11-19 07:34:59,469 INFO L226 Difference]: Without dead ends: 12255 [2023-11-19 07:34:59,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:59,484 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2655 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:59,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 3639 Invalid, 3406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1010 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 07:34:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12255 states. [2023-11-19 07:35:00,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12255 to 7739. [2023-11-19 07:35:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7739 states, 6346 states have (on average 1.647967223447841) internal successors, (10458), 6374 states have internal predecessors, (10458), 1336 states have call successors, (1336), 56 states have call predecessors, (1336), 56 states have return successors, (1336), 1308 states have call predecessors, (1336), 1336 states have call successors, (1336) [2023-11-19 07:35:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 13130 transitions. [2023-11-19 07:35:00,540 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 13130 transitions. Word has length 734 [2023-11-19 07:35:00,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:00,542 INFO L495 AbstractCegarLoop]: Abstraction has 7739 states and 13130 transitions. [2023-11-19 07:35:00,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:35:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 13130 transitions. [2023-11-19 07:35:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:35:00,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:00,560 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:00,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:00,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:35:00,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:00,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1704817254, now seen corresponding path program 1 times [2023-11-19 07:35:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:00,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690457520] [2023-11-19 07:35:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:00,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:00,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238221496] [2023-11-19 07:35:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:00,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:00,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:35:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:01,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:35:01,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:35:01,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:01,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690457520] [2023-11-19 07:35:01,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238221496] [2023-11-19 07:35:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238221496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642028454] [2023-11-19 07:35:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:01,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:01,637 INFO L87 Difference]: Start difference. First operand 7739 states and 13130 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:35:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:02,366 INFO L93 Difference]: Finished difference Result 15917 states and 27098 transitions. [2023-11-19 07:35:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:02,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 734 [2023-11-19 07:35:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:02,396 INFO L225 Difference]: With dead ends: 15917 [2023-11-19 07:35:02,396 INFO L226 Difference]: Without dead ends: 8153 [2023-11-19 07:35:02,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 732 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 07:35:02,415 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 558 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:02,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1655 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2023-11-19 07:35:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8035. [2023-11-19 07:35:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 6642 states have (on average 1.6522131887985547) internal successors, (10974), 6670 states have internal predecessors, (10974), 1336 states have call successors, (1336), 56 states have call predecessors, (1336), 56 states have return successors, (1336), 1308 states have call predecessors, (1336), 1336 states have call successors, (1336) [2023-11-19 07:35:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 13646 transitions. [2023-11-19 07:35:03,266 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 13646 transitions. Word has length 734 [2023-11-19 07:35:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:03,267 INFO L495 AbstractCegarLoop]: Abstraction has 8035 states and 13646 transitions. [2023-11-19 07:35:03,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:35:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 13646 transitions. [2023-11-19 07:35:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:35:03,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:03,285 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:03,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:35:03,510 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:03,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1564268644, now seen corresponding path program 1 times [2023-11-19 07:35:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272722826] [2023-11-19 07:35:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:03,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:03,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410298342] [2023-11-19 07:35:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:03,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:03,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:03,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:35:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:04,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:35:04,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 07:35:06,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:06,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:06,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272722826] [2023-11-19 07:35:06,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:06,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410298342] [2023-11-19 07:35:06,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410298342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:06,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:06,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731378254] [2023-11-19 07:35:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:06,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:06,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:06,680 INFO L87 Difference]: Start difference. First operand 8035 states and 13646 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:35:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:08,243 INFO L93 Difference]: Finished difference Result 24965 states and 42450 transitions. [2023-11-19 07:35:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 734 [2023-11-19 07:35:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:08,307 INFO L225 Difference]: With dead ends: 24965 [2023-11-19 07:35:08,308 INFO L226 Difference]: Without dead ends: 16933 [2023-11-19 07:35:08,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:08,333 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 806 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:08,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2141 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:35:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16933 states. [2023-11-19 07:35:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16933 to 16449. [2023-11-19 07:35:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16449 states, 13543 states have (on average 1.6422506091707894) internal successors, (22241), 13599 states have internal predecessors, (22241), 2786 states have call successors, (2786), 119 states have call predecessors, (2786), 119 states have return successors, (2786), 2730 states have call predecessors, (2786), 2786 states have call successors, (2786) [2023-11-19 07:35:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16449 states to 16449 states and 27813 transitions. [2023-11-19 07:35:10,001 INFO L78 Accepts]: Start accepts. Automaton has 16449 states and 27813 transitions. Word has length 734 [2023-11-19 07:35:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:10,002 INFO L495 AbstractCegarLoop]: Abstraction has 16449 states and 27813 transitions. [2023-11-19 07:35:10,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 07:35:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 16449 states and 27813 transitions. [2023-11-19 07:35:10,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:35:10,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:10,027 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:10,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:10,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:35:10,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:10,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1054795554, now seen corresponding path program 1 times [2023-11-19 07:35:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663445310] [2023-11-19 07:35:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:10,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:10,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:10,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407460038] [2023-11-19 07:35:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:10,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:10,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:10,338 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:10,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f022bf-2dc3-4f26-8ac1-7942082bdd28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:35:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:11,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:35:11,044 INFO L285 TraceCheckSpWp]: Computing forward predicates...