./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme --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 d2ac2ade0b5a8b4fe781342f1619d7dd5e5c5b8a1b1139b842ae9332f648993d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:58:09,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:58:10,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:58:10,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:58:10,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:58:10,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:58:10,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:58:10,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:58:10,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:58:10,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:58:10,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:58:10,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:58:10,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:58:10,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:58:10,151 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:58:10,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:58:10,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:58:10,153 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:58:10,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:58:10,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:58:10,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:58:10,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:58:10,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:58:10,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:58:10,157 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:58:10,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:58:10,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:58:10,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:58:10,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:58:10,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:58:10,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:58:10,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:10,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:58:10,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:58:10,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:58:10,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:58:10,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:58:10,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:58:10,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:58:10,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:58:10,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:58:10,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:58:10,167 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_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2ac2ade0b5a8b4fe781342f1619d7dd5e5c5b8a1b1139b842ae9332f648993d [2023-11-26 11:58:10,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:58:10,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:58:10,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:58:10,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:58:10,601 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:58:10,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i [2023-11-26 11:58:13,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:58:14,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:58:14,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i [2023-11-26 11:58:14,167 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/data/1d039f84e/531c35575b0d4c378bee8c9193b09f28/FLAG6185f3ed5 [2023-11-26 11:58:14,182 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/data/1d039f84e/531c35575b0d4c378bee8c9193b09f28 [2023-11-26 11:58:14,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:58:14,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:58:14,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:14,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:58:14,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:58:14,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:14,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29747417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14, skipping insertion in model container [2023-11-26 11:58:14,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:14,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:58:14,497 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_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i[916,929] [2023-11-26 11:58:14,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:14,783 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:58:14,798 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_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i[916,929] [2023-11-26 11:58:14,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:14,941 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:58:14,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14 WrapperNode [2023-11-26 11:58:14,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:14,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:14,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:58:14,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:58:14,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:14,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,128 INFO L138 Inliner]: procedures = 26, calls = 138, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 893 [2023-11-26 11:58:15,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:15,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:58:15,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:58:15,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:58:15,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,167 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,239 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:58:15,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:58:15,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:58:15,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:58:15,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:58:15,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (1/1) ... [2023-11-26 11:58:15,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:15,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:15,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:58:15,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:58:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:58:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:58:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:58:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:58:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:58:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:58:15,693 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:58:15,696 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:58:17,298 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:58:17,354 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:58:17,355 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:58:17,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:17 BoogieIcfgContainer [2023-11-26 11:58:17,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:58:17,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:58:17,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:58:17,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:58:17,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:58:14" (1/3) ... [2023-11-26 11:58:17,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617b3e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:17, skipping insertion in model container [2023-11-26 11:58:17,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:14" (2/3) ... [2023-11-26 11:58:17,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617b3e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:17, skipping insertion in model container [2023-11-26 11:58:17,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:17" (3/3) ... [2023-11-26 11:58:17,365 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-37.i [2023-11-26 11:58:17,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:58:17,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:58:17,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:58:17,455 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;@69f0091b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:58:17,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:58:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 217 states have (on average 1.6129032258064515) internal successors, (350), 218 states have internal predecessors, (350), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2023-11-26 11:58:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:17,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:17,524 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:17,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:17,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash 304955146, now seen corresponding path program 1 times [2023-11-26 11:58:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:17,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806900042] [2023-11-26 11:58:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:18,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806900042] [2023-11-26 11:58:18,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:58:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132133268] [2023-11-26 11:58:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:18,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:18,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:18,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:18,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:58:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:18,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:58:18,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 30752 trivial. 0 not checked. [2023-11-26 11:58:18,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132133268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:18,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:18,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084446573] [2023-11-26 11:58:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:18,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:58:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:58:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:58:19,013 INFO L87 Difference]: Start difference. First operand has 345 states, 217 states have (on average 1.6129032258064515) internal successors, (350), 218 states have internal predecessors, (350), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (125), 2 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 2 states have call successors, (125) [2023-11-26 11:58:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:19,166 INFO L93 Difference]: Finished difference Result 687 states and 1323 transitions. [2023-11-26 11:58:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:58:19,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (125), 2 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 2 states have call successors, (125) Word has length 786 [2023-11-26 11:58:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:19,183 INFO L225 Difference]: With dead ends: 687 [2023-11-26 11:58:19,183 INFO L226 Difference]: Without dead ends: 343 [2023-11-26 11:58:19,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:58:19,197 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:19,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 588 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-26 11:58:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-26 11:58:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 states have internal predecessors, (341), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2023-11-26 11:58:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 591 transitions. [2023-11-26 11:58:19,311 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 591 transitions. Word has length 786 [2023-11-26 11:58:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:19,311 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 591 transitions. [2023-11-26 11:58:19,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (125), 2 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 2 states have call successors, (125) [2023-11-26 11:58:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 591 transitions. [2023-11-26 11:58:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:19,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:19,346 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:19,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:19,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:19,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:19,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash -636786118, now seen corresponding path program 1 times [2023-11-26 11:58:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:19,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115884780] [2023-11-26 11:58:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:19,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144867864] [2023-11-26 11:58:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:19,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:19,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:19,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:19,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:58:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:20,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:20,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:20,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:20,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:20,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115884780] [2023-11-26 11:58:20,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144867864] [2023-11-26 11:58:20,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144867864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:20,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:20,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133530192] [2023-11-26 11:58:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:20,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:20,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:20,416 INFO L87 Difference]: Start difference. First operand 343 states and 591 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:20,633 INFO L93 Difference]: Finished difference Result 858 states and 1488 transitions. [2023-11-26 11:58:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:20,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:20,645 INFO L225 Difference]: With dead ends: 858 [2023-11-26 11:58:20,645 INFO L226 Difference]: Without dead ends: 516 [2023-11-26 11:58:20,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:20,649 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 307 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:20,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1113 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-26 11:58:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2023-11-26 11:58:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 359 states have (on average 1.6518105849582172) internal successors, (593), 360 states have internal predecessors, (593), 151 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (151), 150 states have call predecessors, (151), 151 states have call successors, (151) [2023-11-26 11:58:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 895 transitions. [2023-11-26 11:58:20,757 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 895 transitions. Word has length 786 [2023-11-26 11:58:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:20,778 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 895 transitions. [2023-11-26 11:58:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 895 transitions. [2023-11-26 11:58:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:20,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:20,789 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:20,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:58:21,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:21,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1239696700, now seen corresponding path program 1 times [2023-11-26 11:58:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466503013] [2023-11-26 11:58:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:21,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878394160] [2023-11-26 11:58:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:21,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:21,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:21,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:21,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:58:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:21,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:58:21,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:22,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:22,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466503013] [2023-11-26 11:58:22,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:22,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878394160] [2023-11-26 11:58:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878394160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:22,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:22,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824929580] [2023-11-26 11:58:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:22,063 INFO L87 Difference]: Start difference. First operand 513 states and 895 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:22,469 INFO L93 Difference]: Finished difference Result 1408 states and 2469 transitions. [2023-11-26 11:58:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:22,482 INFO L225 Difference]: With dead ends: 1408 [2023-11-26 11:58:22,482 INFO L226 Difference]: Without dead ends: 896 [2023-11-26 11:58:22,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:22,486 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 363 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:22,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2273 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:58:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-11-26 11:58:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 893. [2023-11-26 11:58:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 657 states have (on average 1.6879756468797564) internal successors, (1109), 660 states have internal predecessors, (1109), 231 states have call successors, (231), 4 states have call predecessors, (231), 4 states have return successors, (231), 228 states have call predecessors, (231), 231 states have call successors, (231) [2023-11-26 11:58:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1571 transitions. [2023-11-26 11:58:22,599 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1571 transitions. Word has length 786 [2023-11-26 11:58:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:22,602 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1571 transitions. [2023-11-26 11:58:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1571 transitions. [2023-11-26 11:58:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:22,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:22,613 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:22,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:22,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:58:22,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:22,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1730414402, now seen corresponding path program 1 times [2023-11-26 11:58:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949099943] [2023-11-26 11:58:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:22,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:22,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794662983] [2023-11-26 11:58:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:22,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:22,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:22,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:23,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:58:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:23,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:23,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:24,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949099943] [2023-11-26 11:58:24,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794662983] [2023-11-26 11:58:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794662983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:24,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:24,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553245426] [2023-11-26 11:58:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:24,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:24,987 INFO L87 Difference]: Start difference. First operand 893 states and 1571 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:25,152 INFO L93 Difference]: Finished difference Result 2677 states and 4711 transitions. [2023-11-26 11:58:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:25,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:25,172 INFO L225 Difference]: With dead ends: 2677 [2023-11-26 11:58:25,172 INFO L226 Difference]: Without dead ends: 1785 [2023-11-26 11:58:25,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:25,179 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 224 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:25,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1287 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2023-11-26 11:58:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1783. [2023-11-26 11:58:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1312 states have (on average 1.6859756097560976) internal successors, (2212), 1318 states have internal predecessors, (2212), 462 states have call successors, (462), 8 states have call predecessors, (462), 8 states have return successors, (462), 456 states have call predecessors, (462), 462 states have call successors, (462) [2023-11-26 11:58:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 3136 transitions. [2023-11-26 11:58:25,522 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 3136 transitions. Word has length 786 [2023-11-26 11:58:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:25,525 INFO L495 AbstractCegarLoop]: Abstraction has 1783 states and 3136 transitions. [2023-11-26 11:58:25,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 3136 transitions. [2023-11-26 11:58:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:25,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:25,537 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:25,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:25,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:25,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 180628156, now seen corresponding path program 1 times [2023-11-26 11:58:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042418717] [2023-11-26 11:58:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:25,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912867877] [2023-11-26 11:58:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:25,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:25,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:25,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:58:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:26,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:26,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:26,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042418717] [2023-11-26 11:58:26,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:26,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912867877] [2023-11-26 11:58:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912867877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:26,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:26,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485032965] [2023-11-26 11:58:26,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:26,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:26,623 INFO L87 Difference]: Start difference. First operand 1783 states and 3136 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:26,840 INFO L93 Difference]: Finished difference Result 5017 states and 8856 transitions. [2023-11-26 11:58:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:26,867 INFO L225 Difference]: With dead ends: 5017 [2023-11-26 11:58:26,868 INFO L226 Difference]: Without dead ends: 3235 [2023-11-26 11:58:26,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:26,878 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 293 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:26,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1261 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:26,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2023-11-26 11:58:27,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3229. [2023-11-26 11:58:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 2494 states have (on average 1.706495589414595) internal successors, (4256), 2508 states have internal predecessors, (4256), 718 states have call successors, (718), 16 states have call predecessors, (718), 16 states have return successors, (718), 704 states have call predecessors, (718), 718 states have call successors, (718) [2023-11-26 11:58:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 5692 transitions. [2023-11-26 11:58:27,297 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 5692 transitions. Word has length 786 [2023-11-26 11:58:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:27,300 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 5692 transitions. [2023-11-26 11:58:27,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 5692 transitions. [2023-11-26 11:58:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:27,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:27,313 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:27,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:27,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:27,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:27,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash 422115128, now seen corresponding path program 1 times [2023-11-26 11:58:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:27,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503612589] [2023-11-26 11:58:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:27,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:27,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459310307] [2023-11-26 11:58:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:27,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:27,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:27,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:27,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:58:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:28,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:28,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:28,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503612589] [2023-11-26 11:58:28,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459310307] [2023-11-26 11:58:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459310307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:28,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704075784] [2023-11-26 11:58:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:28,385 INFO L87 Difference]: Start difference. First operand 3229 states and 5692 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:28,684 INFO L93 Difference]: Finished difference Result 9183 states and 16188 transitions. [2023-11-26 11:58:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:28,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:28,730 INFO L225 Difference]: With dead ends: 9183 [2023-11-26 11:58:28,730 INFO L226 Difference]: Without dead ends: 5955 [2023-11-26 11:58:28,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:28,744 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 269 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:28,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1263 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5955 states. [2023-11-26 11:58:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5955 to 5949. [2023-11-26 11:58:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5949 states, 4670 states have (on average 1.699357601713062) internal successors, (7936), 4700 states have internal predecessors, (7936), 1246 states have call successors, (1246), 32 states have call predecessors, (1246), 32 states have return successors, (1246), 1216 states have call predecessors, (1246), 1246 states have call successors, (1246) [2023-11-26 11:58:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 10428 transitions. [2023-11-26 11:58:29,317 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 10428 transitions. Word has length 786 [2023-11-26 11:58:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 5949 states and 10428 transitions. [2023-11-26 11:58:29,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 10428 transitions. [2023-11-26 11:58:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:29,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:29,367 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:29,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:29,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:29,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:29,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1094634886, now seen corresponding path program 1 times [2023-11-26 11:58:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344448499] [2023-11-26 11:58:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:29,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:29,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253341424] [2023-11-26 11:58:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:29,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:29,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:29,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:29,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:58:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:30,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:30,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:30,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:30,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344448499] [2023-11-26 11:58:30,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253341424] [2023-11-26 11:58:30,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253341424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:30,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:30,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477306884] [2023-11-26 11:58:30,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:30,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:30,402 INFO L87 Difference]: Start difference. First operand 5949 states and 10428 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:31,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:31,007 INFO L93 Difference]: Finished difference Result 17339 states and 30392 transitions. [2023-11-26 11:58:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:31,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:31,110 INFO L225 Difference]: With dead ends: 17339 [2023-11-26 11:58:31,111 INFO L226 Difference]: Without dead ends: 11391 [2023-11-26 11:58:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:31,133 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 319 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:31,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1359 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2023-11-26 11:58:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 11381. [2023-11-26 11:58:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11381 states, 9030 states have (on average 1.6965669988925802) internal successors, (15320), 9092 states have internal predecessors, (15320), 2286 states have call successors, (2286), 64 states have call predecessors, (2286), 64 states have return successors, (2286), 2224 states have call predecessors, (2286), 2286 states have call successors, (2286) [2023-11-26 11:58:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11381 states to 11381 states and 19892 transitions. [2023-11-26 11:58:32,157 INFO L78 Accepts]: Start accepts. Automaton has 11381 states and 19892 transitions. Word has length 786 [2023-11-26 11:58:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:32,159 INFO L495 AbstractCegarLoop]: Abstraction has 11381 states and 19892 transitions. [2023-11-26 11:58:32,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 11381 states and 19892 transitions. [2023-11-26 11:58:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:32,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:32,186 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:32,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:32,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:32,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:32,398 INFO L85 PathProgramCache]: Analyzing trace with hash -854395140, now seen corresponding path program 1 times [2023-11-26 11:58:32,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:32,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420850747] [2023-11-26 11:58:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:32,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:32,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470792526] [2023-11-26 11:58:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:32,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:32,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:32,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:32,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:58:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:33,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:33,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:33,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420850747] [2023-11-26 11:58:33,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470792526] [2023-11-26 11:58:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470792526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:33,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:33,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722928717] [2023-11-26 11:58:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:33,165 INFO L87 Difference]: Start difference. First operand 11381 states and 19892 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:33,965 INFO L93 Difference]: Finished difference Result 22803 states and 39816 transitions. [2023-11-26 11:58:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:34,016 INFO L225 Difference]: With dead ends: 22803 [2023-11-26 11:58:34,016 INFO L226 Difference]: Without dead ends: 11423 [2023-11-26 11:58:34,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:34,060 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 288 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:34,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1173 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11423 states. [2023-11-26 11:58:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11423 to 7773. [2023-11-26 11:58:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 6486 states have (on average 1.732963305581252) internal successors, (11240), 6516 states have internal predecessors, (11240), 1246 states have call successors, (1246), 40 states have call predecessors, (1246), 40 states have return successors, (1246), 1216 states have call predecessors, (1246), 1246 states have call successors, (1246) [2023-11-26 11:58:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 13732 transitions. [2023-11-26 11:58:34,870 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 13732 transitions. Word has length 786 [2023-11-26 11:58:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:34,872 INFO L495 AbstractCegarLoop]: Abstraction has 7773 states and 13732 transitions. [2023-11-26 11:58:34,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 13732 transitions. [2023-11-26 11:58:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:34,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:34,893 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:34,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:35,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:35,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:35,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1391184314, now seen corresponding path program 1 times [2023-11-26 11:58:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:35,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878678974] [2023-11-26 11:58:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:35,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:35,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653320803] [2023-11-26 11:58:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:35,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:35,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:35,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:35,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:58:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:35,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:35,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:35,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:35,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878678974] [2023-11-26 11:58:35,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653320803] [2023-11-26 11:58:35,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653320803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062377519] [2023-11-26 11:58:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:35,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:35,898 INFO L87 Difference]: Start difference. First operand 7773 states and 13732 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:36,643 INFO L93 Difference]: Finished difference Result 20731 states and 36392 transitions. [2023-11-26 11:58:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:36,692 INFO L225 Difference]: With dead ends: 20731 [2023-11-26 11:58:36,692 INFO L226 Difference]: Without dead ends: 12959 [2023-11-26 11:58:36,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:36,717 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 237 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:36,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1268 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12959 states. [2023-11-26 11:58:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12959 to 12953. [2023-11-26 11:58:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 10562 states have (on average 1.6955122135959098) internal successors, (17908), 10624 states have internal predecessors, (17908), 2310 states have call successors, (2310), 80 states have call predecessors, (2310), 80 states have return successors, (2310), 2248 states have call predecessors, (2310), 2310 states have call successors, (2310) [2023-11-26 11:58:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 22528 transitions. [2023-11-26 11:58:37,926 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 22528 transitions. Word has length 786 [2023-11-26 11:58:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:37,928 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 22528 transitions. [2023-11-26 11:58:37,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 22528 transitions. [2023-11-26 11:58:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:37,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:37,968 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:37,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 11:58:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:38,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:38,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1900657404, now seen corresponding path program 1 times [2023-11-26 11:58:38,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:38,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848367760] [2023-11-26 11:58:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:38,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:38,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638166117] [2023-11-26 11:58:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:38,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:38,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:38,308 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:38,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:58:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:38,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:58:38,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 14434 proven. 237 refuted. 0 times theorem prover too weak. 16329 trivial. 0 not checked. [2023-11-26 11:58:39,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 135 proven. 237 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-11-26 11:58:40,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848367760] [2023-11-26 11:58:40,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638166117] [2023-11-26 11:58:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638166117] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:40,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:58:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:58:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265647251] [2023-11-26 11:58:40,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:40,828 INFO L87 Difference]: Start difference. First operand 12953 states and 22528 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (204), 2 states have call predecessors, (204), 4 states have return successors, (205), 2 states have call predecessors, (205), 2 states have call successors, (205) [2023-11-26 11:58:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:42,365 INFO L93 Difference]: Finished difference Result 20829 states and 36359 transitions. [2023-11-26 11:58:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:58:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (204), 2 states have call predecessors, (204), 4 states have return successors, (205), 2 states have call predecessors, (205), 2 states have call successors, (205) Word has length 786 [2023-11-26 11:58:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:42,397 INFO L225 Difference]: With dead ends: 20829 [2023-11-26 11:58:42,397 INFO L226 Difference]: Without dead ends: 7877 [2023-11-26 11:58:42,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1564 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:42,427 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 557 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:42,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1084 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:58:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2023-11-26 11:58:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7789. [2023-11-26 11:58:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 6498 states have (on average 1.7020621729763004) internal successors, (11060), 6528 states have internal predecessors, (11060), 1246 states have call successors, (1246), 44 states have call predecessors, (1246), 44 states have return successors, (1246), 1216 states have call predecessors, (1246), 1246 states have call successors, (1246) [2023-11-26 11:58:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 13552 transitions. [2023-11-26 11:58:43,017 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 13552 transitions. Word has length 786 [2023-11-26 11:58:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:43,019 INFO L495 AbstractCegarLoop]: Abstraction has 7789 states and 13552 transitions. [2023-11-26 11:58:43,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (204), 2 states have call predecessors, (204), 4 states have return successors, (205), 2 states have call predecessors, (205), 2 states have call successors, (205) [2023-11-26 11:58:43,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 13552 transitions. [2023-11-26 11:58:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:43,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:43,041 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:43,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:58:43,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:43,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash -42486088, now seen corresponding path program 1 times [2023-11-26 11:58:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:43,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989516104] [2023-11-26 11:58:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:43,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729086895] [2023-11-26 11:58:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:43,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:43,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:43,375 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:43,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:58:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:44,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:58:44,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-11-26 11:58:44,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:44,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:44,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989516104] [2023-11-26 11:58:44,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:44,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729086895] [2023-11-26 11:58:44,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729086895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:44,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440057436] [2023-11-26 11:58:44,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:44,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:44,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:44,135 INFO L87 Difference]: Start difference. First operand 7789 states and 13552 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:44,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:44,850 INFO L93 Difference]: Finished difference Result 21857 states and 38436 transitions. [2023-11-26 11:58:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:44,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-11-26 11:58:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:44,889 INFO L225 Difference]: With dead ends: 21857 [2023-11-26 11:58:44,889 INFO L226 Difference]: Without dead ends: 14069 [2023-11-26 11:58:44,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:44,907 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 821 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:44,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2271 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:58:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14069 states. [2023-11-26 11:58:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14069 to 7875. [2023-11-26 11:58:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7875 states, 6538 states have (on average 1.6928724380544509) internal successors, (11068), 6569 states have internal predecessors, (11068), 1286 states have call successors, (1286), 50 states have call predecessors, (1286), 50 states have return successors, (1286), 1255 states have call predecessors, (1286), 1286 states have call successors, (1286) [2023-11-26 11:58:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7875 states to 7875 states and 13640 transitions. [2023-11-26 11:58:45,744 INFO L78 Accepts]: Start accepts. Automaton has 7875 states and 13640 transitions. Word has length 786 [2023-11-26 11:58:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:45,746 INFO L495 AbstractCegarLoop]: Abstraction has 7875 states and 13640 transitions. [2023-11-26 11:58:45,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-11-26 11:58:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7875 states and 13640 transitions. [2023-11-26 11:58:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:45,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:45,766 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:45,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:58:45,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:45,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1630833990, now seen corresponding path program 1 times [2023-11-26 11:58:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709088561] [2023-11-26 11:58:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:46,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:46,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494016688] [2023-11-26 11:58:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:46,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:46,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:46,078 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:46,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:58:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:46,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:58:46,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 14694 proven. 231 refuted. 0 times theorem prover too weak. 16075 trivial. 0 not checked. [2023-11-26 11:58:47,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 141 proven. 231 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-11-26 11:58:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:48,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709088561] [2023-11-26 11:58:48,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:48,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494016688] [2023-11-26 11:58:48,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494016688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:48,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:58:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:58:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773547987] [2023-11-26 11:58:48,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:48,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:48,408 INFO L87 Difference]: Start difference. First operand 7875 states and 13640 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (203), 2 states have call predecessors, (203), 2 states have call successors, (203) [2023-11-26 11:58:49,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:49,507 INFO L93 Difference]: Finished difference Result 15799 states and 27287 transitions. [2023-11-26 11:58:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:58:49,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (203), 2 states have call predecessors, (203), 2 states have call successors, (203) Word has length 786 [2023-11-26 11:58:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:49,537 INFO L225 Difference]: With dead ends: 15799 [2023-11-26 11:58:49,538 INFO L226 Difference]: Without dead ends: 7995 [2023-11-26 11:58:49,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1564 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:49,553 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 512 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:49,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1078 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:58:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2023-11-26 11:58:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 7891. [2023-11-26 11:58:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7891 states, 6550 states have (on average 1.67206106870229) internal successors, (10952), 6581 states have internal predecessors, (10952), 1286 states have call successors, (1286), 54 states have call predecessors, (1286), 54 states have return successors, (1286), 1255 states have call predecessors, (1286), 1286 states have call successors, (1286) [2023-11-26 11:58:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 13524 transitions. [2023-11-26 11:58:50,106 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 13524 transitions. Word has length 786 [2023-11-26 11:58:50,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 7891 states and 13524 transitions. [2023-11-26 11:58:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (203), 2 states have call predecessors, (203), 2 states have call successors, (203) [2023-11-26 11:58:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 13524 transitions. [2023-11-26 11:58:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-26 11:58:50,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:50,127 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:50,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:50,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:58:50,337 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:50,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:50,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2111977994, now seen corresponding path program 1 times [2023-11-26 11:58:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:50,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151918047] [2023-11-26 11:58:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:50,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93885551] [2023-11-26 11:58:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:50,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:50,427 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:50,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dac32b5-667a-40cf-bf47-5c2f7c7108ec/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:58:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:51,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:58:51,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 12972 proven. 108 refuted. 0 times theorem prover too weak. 17920 trivial. 0 not checked. [2023-11-26 11:58:51,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 264 proven. 108 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-11-26 11:58:52,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:52,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151918047] [2023-11-26 11:58:52,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:52,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93885551] [2023-11-26 11:58:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93885551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:52,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:58:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 11:58:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967919495] [2023-11-26 11:58:52,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:52,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:58:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:58:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:58:52,465 INFO L87 Difference]: Start difference. First operand 7891 states and 13524 transitions. Second operand has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162)