./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.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_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/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_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/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_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/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 5208e97c947824349dcc8cb32160d4052cba683a795fae400d45ff0b27a23a25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:10,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:10,769 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:10,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:10,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:10,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:10,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:10,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:10,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:10,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:10,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:10,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:10,827 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:10,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:10,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:10,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:10,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:10,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:10,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:10,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:10,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:10,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:10,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:10,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:10,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:10,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:10,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:10,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:10,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:10,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:10,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:10,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:10,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:10,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:10,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:10,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:10,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:10,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:10,838 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:10,838 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_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5208e97c947824349dcc8cb32160d4052cba683a795fae400d45ff0b27a23a25 [2023-11-19 07:38:11,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:11,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:11,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:11,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:11,236 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:11,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i [2023-11-19 07:38:14,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:14,812 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:14,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i [2023-11-19 07:38:14,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/data/4004173df/41704a0ef5264a2db4cb1400b4ab9e8e/FLAG667a07582 [2023-11-19 07:38:14,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/data/4004173df/41704a0ef5264a2db4cb1400b4ab9e8e [2023-11-19 07:38:14,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:14,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:14,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:14,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:14,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:14,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:14" (1/1) ... [2023-11-19 07:38:14,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b149981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:14, skipping insertion in model container [2023-11-19 07:38:14,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:14" (1/1) ... [2023-11-19 07:38:14,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:15,152 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_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i[916,929] [2023-11-19 07:38:15,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:15,396 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:15,418 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_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i[916,929] [2023-11-19 07:38:15,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:15,549 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:15,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15 WrapperNode [2023-11-19 07:38:15,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:15,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:15,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:15,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:15,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,707 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 484 [2023-11-19 07:38:15,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:15,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:15,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:15,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:15,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:15,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:15,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:15,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:15,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:15,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:15,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:15,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:38:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:38:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:16,111 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:16,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:17,113 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:17,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:17,133 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:17,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:17 BoogieIcfgContainer [2023-11-19 07:38:17,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:17,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:17,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:17,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:17,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:14" (1/3) ... [2023-11-19 07:38:17,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abcc014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:17, skipping insertion in model container [2023-11-19 07:38:17,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (2/3) ... [2023-11-19 07:38:17,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abcc014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:17, skipping insertion in model container [2023-11-19 07:38:17,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:17" (3/3) ... [2023-11-19 07:38:17,149 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-55.i [2023-11-19 07:38:17,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:17,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:38:17,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:17,241 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;@7c67fe95, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:17,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:38:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 126 states have (on average 1.492063492063492) internal successors, (188), 127 states have internal predecessors, (188), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-19 07:38:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-11-19 07:38:17,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:17,278 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:17,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:17,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1424431598, now seen corresponding path program 1 times [2023-11-19 07:38:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:17,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450988165] [2023-11-19 07:38:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450988165] [2023-11-19 07:38:17,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:38:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752795683] [2023-11-19 07:38:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:17,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:18,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:38:18,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2023-11-19 07:38:18,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752795683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:18,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:18,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005378905] [2023-11-19 07:38:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:18,480 INFO L87 Difference]: Start difference. First operand has 190 states, 126 states have (on average 1.492063492063492) internal successors, (188), 127 states have internal predecessors, (188), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2023-11-19 07:38:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:18,593 INFO L93 Difference]: Finished difference Result 372 states and 673 transitions. [2023-11-19 07:38:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:18,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 388 [2023-11-19 07:38:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:18,614 INFO L225 Difference]: With dead ends: 372 [2023-11-19 07:38:18,614 INFO L226 Difference]: Without dead ends: 185 [2023-11-19 07:38:18,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 387 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 07:38:18,625 INFO L413 NwaCegarLoop]: 299 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, 299 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 07:38:18,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-19 07:38:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-19 07:38:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 122 states have (on average 1.4508196721311475) internal successors, (177), 122 states have internal predecessors, (177), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-19 07:38:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 299 transitions. [2023-11-19 07:38:18,708 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 299 transitions. Word has length 388 [2023-11-19 07:38:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:18,709 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 299 transitions. [2023-11-19 07:38:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2023-11-19 07:38:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 299 transitions. [2023-11-19 07:38:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-11-19 07:38:18,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:18,734 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:18,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:38:18,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:18,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1116369226, now seen corresponding path program 1 times [2023-11-19 07:38:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:18,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189487297] [2023-11-19 07:38:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:19,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:19,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310727178] [2023-11-19 07:38:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:19,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:19,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:19,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:19,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:38:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:19,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:38:19,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-19 07:38:20,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189487297] [2023-11-19 07:38:20,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:20,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310727178] [2023-11-19 07:38:20,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310727178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:20,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:20,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:20,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504245840] [2023-11-19 07:38:20,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:20,186 INFO L87 Difference]: Start difference. First operand 185 states and 299 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-19 07:38:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:20,584 INFO L93 Difference]: Finished difference Result 605 states and 981 transitions. [2023-11-19 07:38:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 388 [2023-11-19 07:38:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:20,599 INFO L225 Difference]: With dead ends: 605 [2023-11-19 07:38:20,600 INFO L226 Difference]: Without dead ends: 423 [2023-11-19 07:38:20,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:20,604 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 376 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:20,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1285 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:38:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-19 07:38:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 365. [2023-11-19 07:38:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 240 states have (on average 1.4541666666666666) internal successors, (349), 240 states have internal predecessors, (349), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-19 07:38:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 593 transitions. [2023-11-19 07:38:20,720 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 593 transitions. Word has length 388 [2023-11-19 07:38:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:20,724 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 593 transitions. [2023-11-19 07:38:20,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-19 07:38:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 593 transitions. [2023-11-19 07:38:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-19 07:38:20,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:20,737 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:20,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:20,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:20,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1495566846, now seen corresponding path program 1 times [2023-11-19 07:38:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599158091] [2023-11-19 07:38:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:21,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305439807] [2023-11-19 07:38:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:21,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:21,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:21,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:21,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:38:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:21,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:38:21,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-19 07:38:21,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:21,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599158091] [2023-11-19 07:38:21,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:21,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305439807] [2023-11-19 07:38:21,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305439807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:21,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:21,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:21,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258743244] [2023-11-19 07:38:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:21,536 INFO L87 Difference]: Start difference. First operand 365 states and 593 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-19 07:38:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:21,683 INFO L93 Difference]: Finished difference Result 1073 states and 1743 transitions. [2023-11-19 07:38:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:21,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 389 [2023-11-19 07:38:21,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:21,694 INFO L225 Difference]: With dead ends: 1073 [2023-11-19 07:38:21,695 INFO L226 Difference]: Without dead ends: 711 [2023-11-19 07:38:21,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 387 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 07:38:21,701 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 265 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:21,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 766 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:38:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-19 07:38:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 427. [2023-11-19 07:38:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 302 states have (on average 1.4403973509933774) internal successors, (435), 302 states have internal predecessors, (435), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-19 07:38:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 679 transitions. [2023-11-19 07:38:21,798 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 679 transitions. Word has length 389 [2023-11-19 07:38:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:21,803 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 679 transitions. [2023-11-19 07:38:21,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-19 07:38:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 679 transitions. [2023-11-19 07:38:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-19 07:38:21,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:21,809 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:21,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:38:22,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:22,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:22,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1213201912, now seen corresponding path program 1 times [2023-11-19 07:38:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:22,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820159584] [2023-11-19 07:38:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:22,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:22,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516483316] [2023-11-19 07:38:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:22,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:22,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:22,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:38:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:22,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:38:22,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 858 proven. 9 refuted. 0 times theorem prover too weak. 6453 trivial. 0 not checked. [2023-11-19 07:38:22,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 171 proven. 9 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-11-19 07:38:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820159584] [2023-11-19 07:38:22,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516483316] [2023-11-19 07:38:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516483316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:22,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-19 07:38:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933713034] [2023-11-19 07:38:22,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:23,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:38:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:38:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:23,003 INFO L87 Difference]: Start difference. First operand 427 states and 679 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-19 07:38:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:24,209 INFO L93 Difference]: Finished difference Result 923 states and 1451 transitions. [2023-11-19 07:38:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:38:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 389 [2023-11-19 07:38:24,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:24,218 INFO L225 Difference]: With dead ends: 923 [2023-11-19 07:38:24,219 INFO L226 Difference]: Without dead ends: 499 [2023-11-19 07:38:24,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 769 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:38:24,227 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 446 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:24,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1068 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:38:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-19 07:38:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 473. [2023-11-19 07:38:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 283 states have (on average 1.2932862190812722) internal successors, (366), 284 states have internal predecessors, (366), 183 states have call successors, (183), 6 states have call predecessors, (183), 6 states have return successors, (183), 182 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-19 07:38:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 732 transitions. [2023-11-19 07:38:24,348 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 732 transitions. Word has length 389 [2023-11-19 07:38:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:24,349 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 732 transitions. [2023-11-19 07:38:24,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-19 07:38:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 732 transitions. [2023-11-19 07:38:24,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-19 07:38:24,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:24,355 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:24,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:24,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:24,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 217297936, now seen corresponding path program 1 times [2023-11-19 07:38:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022712629] [2023-11-19 07:38:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:24,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:24,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916640359] [2023-11-19 07:38:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:24,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:24,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:24,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:38:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:25,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:25,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-19 07:38:25,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022712629] [2023-11-19 07:38:25,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:25,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916640359] [2023-11-19 07:38:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916640359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:25,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:25,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542985411] [2023-11-19 07:38:25,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:25,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:25,149 INFO L87 Difference]: Start difference. First operand 473 states and 732 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-19 07:38:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:25,697 INFO L93 Difference]: Finished difference Result 857 states and 1331 transitions. [2023-11-19 07:38:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:25,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 390 [2023-11-19 07:38:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:25,702 INFO L225 Difference]: With dead ends: 857 [2023-11-19 07:38:25,703 INFO L226 Difference]: Without dead ends: 493 [2023-11-19 07:38:25,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:25,705 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 548 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:25,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 711 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:38:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-19 07:38:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 473. [2023-11-19 07:38:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 283 states have (on average 1.2862190812720848) internal successors, (364), 284 states have internal predecessors, (364), 183 states have call successors, (183), 6 states have call predecessors, (183), 6 states have return successors, (183), 182 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-19 07:38:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 730 transitions. [2023-11-19 07:38:25,815 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 730 transitions. Word has length 390 [2023-11-19 07:38:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:25,816 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 730 transitions. [2023-11-19 07:38:25,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-19 07:38:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 730 transitions. [2023-11-19 07:38:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-19 07:38:25,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:25,820 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:25,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:26,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:26,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1705930098, now seen corresponding path program 1 times [2023-11-19 07:38:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284155087] [2023-11-19 07:38:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:26,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:26,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:26,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342749177] [2023-11-19 07:38:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:26,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:26,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:26,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:38:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:26,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3018 proven. 129 refuted. 0 times theorem prover too weak. 4173 trivial. 0 not checked. [2023-11-19 07:38:26,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 51 proven. 129 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-11-19 07:38:27,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:27,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284155087] [2023-11-19 07:38:27,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:27,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342749177] [2023-11-19 07:38:27,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342749177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:27,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:27,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:38:27,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766244062] [2023-11-19 07:38:27,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:27,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:38:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:27,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:38:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:27,382 INFO L87 Difference]: Start difference. First operand 473 states and 730 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) [2023-11-19 07:38:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:27,866 INFO L93 Difference]: Finished difference Result 855 states and 1307 transitions. [2023-11-19 07:38:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:38:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) Word has length 390 [2023-11-19 07:38:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:27,874 INFO L225 Difference]: With dead ends: 855 [2023-11-19 07:38:27,874 INFO L226 Difference]: Without dead ends: 491 [2023-11-19 07:38:27,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:38:27,877 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 220 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:27,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 508 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:38:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-19 07:38:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 485. [2023-11-19 07:38:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 292 states have (on average 1.2705479452054795) internal successors, (371), 293 states have internal predecessors, (371), 183 states have call successors, (183), 9 states have call predecessors, (183), 9 states have return successors, (183), 182 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-19 07:38:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 737 transitions. [2023-11-19 07:38:27,964 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 737 transitions. Word has length 390 [2023-11-19 07:38:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:27,965 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 737 transitions. [2023-11-19 07:38:27,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) [2023-11-19 07:38:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 737 transitions. [2023-11-19 07:38:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-19 07:38:27,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:27,970 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:27,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:28,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:28,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:28,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash -117582196, now seen corresponding path program 1 times [2023-11-19 07:38:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859347830] [2023-11-19 07:38:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:28,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402851987] [2023-11-19 07:38:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:28,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:28,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:28,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:28,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:38:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:28,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 07:38:28,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 1959 proven. 870 refuted. 0 times theorem prover too weak. 4491 trivial. 0 not checked. [2023-11-19 07:38:34,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 84 proven. 447 refuted. 0 times theorem prover too weak. 6789 trivial. 0 not checked. [2023-11-19 07:38:40,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:40,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859347830] [2023-11-19 07:38:40,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402851987] [2023-11-19 07:38:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402851987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:40,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:40,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 42 [2023-11-19 07:38:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781886052] [2023-11-19 07:38:40,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-19 07:38:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-19 07:38:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1365, Unknown=0, NotChecked=0, Total=1722 [2023-11-19 07:38:40,607 INFO L87 Difference]: Start difference. First operand 485 states and 737 transitions. Second operand has 42 states, 40 states have (on average 4.95) internal successors, (198), 38 states have internal predecessors, (198), 12 states have call successors, (122), 7 states have call predecessors, (122), 12 states have return successors, (122), 10 states have call predecessors, (122), 12 states have call successors, (122) [2023-11-19 07:39:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:00,169 INFO L93 Difference]: Finished difference Result 2182 states and 3183 transitions. [2023-11-19 07:39:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-19 07:39:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 4.95) internal successors, (198), 38 states have internal predecessors, (198), 12 states have call successors, (122), 7 states have call predecessors, (122), 12 states have return successors, (122), 10 states have call predecessors, (122), 12 states have call successors, (122) Word has length 390 [2023-11-19 07:39:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:00,195 INFO L225 Difference]: With dead ends: 2182 [2023-11-19 07:39:00,195 INFO L226 Difference]: Without dead ends: 1810 [2023-11-19 07:39:00,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6211 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=2940, Invalid=14090, Unknown=0, NotChecked=0, Total=17030 [2023-11-19 07:39:00,205 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 2801 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 4987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:00,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2823 Valid, 3641 Invalid, 4987 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [758 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-19 07:39:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2023-11-19 07:39:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 762. [2023-11-19 07:39:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 539 states have (on average 1.3339517625231911) internal successors, (719), 541 states have internal predecessors, (719), 205 states have call successors, (205), 17 states have call predecessors, (205), 17 states have return successors, (205), 203 states have call predecessors, (205), 205 states have call successors, (205) [2023-11-19 07:39:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1129 transitions. [2023-11-19 07:39:00,439 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1129 transitions. Word has length 390 [2023-11-19 07:39:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:00,440 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1129 transitions. [2023-11-19 07:39:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 4.95) internal successors, (198), 38 states have internal predecessors, (198), 12 states have call successors, (122), 7 states have call predecessors, (122), 12 states have return successors, (122), 10 states have call predecessors, (122), 12 states have call successors, (122) [2023-11-19 07:39:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1129 transitions. [2023-11-19 07:39:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-19 07:39:00,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:00,444 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:00,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:00,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1014975474, now seen corresponding path program 1 times [2023-11-19 07:39:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047157915] [2023-11-19 07:39:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:00,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985398969] [2023-11-19 07:39:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:00,741 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:00,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa99e4a8-30ef-46ad-8ec1-f1e08429a39d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:39:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:01,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:39:01,313 INFO L285 TraceCheckSpWp]: Computing forward predicates...