./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:46,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:46,612 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:43:46,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:46,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:46,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:46,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:46,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:46,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:46,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:46,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:46,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:46,651 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:46,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:46,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:46,653 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:46,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:46,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:46,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:46,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:46,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:46,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:46,657 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:46,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:46,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:46,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:46,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:46,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:46,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:46,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:46,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:46,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:46,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:46,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:46,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:46,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:46,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:46,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:46,665 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:46,666 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_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd [2023-11-19 07:43:46,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:46,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:46,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:46,932 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:46,932 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:46,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2023-11-19 07:43:50,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:50,434 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:50,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2023-11-19 07:43:50,450 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/data/c4b4d1ebe/2258cbb1f3e94ead90e384794a5b26d4/FLAGcce4e9ccc [2023-11-19 07:43:50,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/data/c4b4d1ebe/2258cbb1f3e94ead90e384794a5b26d4 [2023-11-19 07:43:50,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:50,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:50,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:50,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:50,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:50,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:50" (1/1) ... [2023-11-19 07:43:50,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a48be4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:50, skipping insertion in model container [2023-11-19 07:43:50,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:50" (1/1) ... [2023-11-19 07:43:50,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:50,735 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_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2023-11-19 07:43:50,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:50,878 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:50,894 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_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2023-11-19 07:43:50,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:51,000 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:51,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51 WrapperNode [2023-11-19 07:43:51,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:51,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:51,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:51,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:51,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,095 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 258 [2023-11-19 07:43:51,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:51,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:51,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:51,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:51,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:51,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:51,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:51,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:51,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (1/1) ... [2023-11-19 07:43:51,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:51,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:43:51,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:43:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:51,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:51,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:51,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:52,035 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:52,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:52,046 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:43:52,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:52 BoogieIcfgContainer [2023-11-19 07:43:52,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:52,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:52,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:52,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:52,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:50" (1/3) ... [2023-11-19 07:43:52,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cfb778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:52, skipping insertion in model container [2023-11-19 07:43:52,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:51" (2/3) ... [2023-11-19 07:43:52,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cfb778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:52, skipping insertion in model container [2023-11-19 07:43:52,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:52" (3/3) ... [2023-11-19 07:43:52,062 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2023-11-19 07:43:52,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:52,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:43:52,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:52,150 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;@601e4256, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:52,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:43:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 68 states have (on average 1.5) internal successors, (102), 69 states have internal predecessors, (102), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:43:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-19 07:43:52,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:52,177 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:52,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:52,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1859855047, now seen corresponding path program 1 times [2023-11-19 07:43:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:52,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204573643] [2023-11-19 07:43:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:52,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204573643] [2023-11-19 07:43:52,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:43:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687081378] [2023-11-19 07:43:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:52,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:52,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:52,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:52,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:43:52,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-11-19 07:43:52,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687081378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:52,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:52,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743747463] [2023-11-19 07:43:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:52,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:43:52,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:43:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:43:52,916 INFO L87 Difference]: Start difference. First operand has 102 states, 68 states have (on average 1.5) internal successors, (102), 69 states have internal predecessors, (102), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 07:43:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:52,974 INFO L93 Difference]: Finished difference Result 197 states and 353 transitions. [2023-11-19 07:43:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:43:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2023-11-19 07:43:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:52,986 INFO L225 Difference]: With dead ends: 197 [2023-11-19 07:43:52,986 INFO L226 Difference]: Without dead ends: 98 [2023-11-19 07:43:52,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:43:52,996 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:52,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-19 07:43:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-19 07:43:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 65 states have internal predecessors, (95), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:43:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 157 transitions. [2023-11-19 07:43:53,061 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 157 transitions. Word has length 202 [2023-11-19 07:43:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:53,062 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 157 transitions. [2023-11-19 07:43:53,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 07:43:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 157 transitions. [2023-11-19 07:43:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-19 07:43:53,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:53,069 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:53,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:53,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:53,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:53,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash 157839933, now seen corresponding path program 1 times [2023-11-19 07:43:53,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:53,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797420617] [2023-11-19 07:43:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:53,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:53,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:43:53,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360660854] [2023-11-19 07:43:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:53,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:53,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:53,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:43:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:53,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:53,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:43:53,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:53,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:53,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797420617] [2023-11-19 07:43:53,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:43:53,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360660854] [2023-11-19 07:43:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360660854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:53,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:53,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:43:53,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011108850] [2023-11-19 07:43:53,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:53,849 INFO L87 Difference]: Start difference. First operand 98 states and 157 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:43:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:54,024 INFO L93 Difference]: Finished difference Result 284 states and 454 transitions. [2023-11-19 07:43:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2023-11-19 07:43:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:54,033 INFO L225 Difference]: With dead ends: 284 [2023-11-19 07:43:54,033 INFO L226 Difference]: Without dead ends: 189 [2023-11-19 07:43:54,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:54,037 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 128 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:54,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 503 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:54,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-19 07:43:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2023-11-19 07:43:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 138 states have (on average 1.5072463768115942) internal successors, (208), 140 states have internal predecessors, (208), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-19 07:43:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 290 transitions. [2023-11-19 07:43:54,094 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 290 transitions. Word has length 202 [2023-11-19 07:43:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:54,096 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 290 transitions. [2023-11-19 07:43:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:43:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 290 transitions. [2023-11-19 07:43:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-19 07:43:54,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:54,113 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:54,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:43:54,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:54,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:54,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1531103809, now seen corresponding path program 1 times [2023-11-19 07:43:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849692875] [2023-11-19 07:43:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:54,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:43:54,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105965762] [2023-11-19 07:43:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:54,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:54,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:54,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:43:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:54,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:43:54,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-19 07:43:55,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 07:43:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849692875] [2023-11-19 07:43:55,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:43:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105965762] [2023-11-19 07:43:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105965762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:55,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:43:55,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-19 07:43:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330844957] [2023-11-19 07:43:55,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:55,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:43:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:43:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:43:55,378 INFO L87 Difference]: Start difference. First operand 183 states and 290 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-19 07:43:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:56,694 INFO L93 Difference]: Finished difference Result 768 states and 1182 transitions. [2023-11-19 07:43:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:43:56,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) Word has length 202 [2023-11-19 07:43:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:56,712 INFO L225 Difference]: With dead ends: 768 [2023-11-19 07:43:56,713 INFO L226 Difference]: Without dead ends: 588 [2023-11-19 07:43:56,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2023-11-19 07:43:56,722 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 350 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:56,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 581 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:43:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-11-19 07:43:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 232. [2023-11-19 07:43:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 184 states have (on average 1.5054347826086956) internal successors, (277), 186 states have internal predecessors, (277), 41 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-19 07:43:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2023-11-19 07:43:56,791 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 202 [2023-11-19 07:43:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:56,792 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2023-11-19 07:43:56,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-19 07:43:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2023-11-19 07:43:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-19 07:43:56,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:56,796 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:56,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:57,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:57,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:57,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:57,014 INFO L85 PathProgramCache]: Analyzing trace with hash 72807339, now seen corresponding path program 1 times [2023-11-19 07:43:57,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:57,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511306695] [2023-11-19 07:43:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:57,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:43:57,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567392904] [2023-11-19 07:43:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:57,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:57,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:43:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:57,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:43:57,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:43:57,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:57,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:57,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511306695] [2023-11-19 07:43:57,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:43:57,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567392904] [2023-11-19 07:43:57,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567392904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:57,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:57,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266509034] [2023-11-19 07:43:57,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:57,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:57,442 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:43:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:57,690 INFO L93 Difference]: Finished difference Result 718 states and 1088 transitions. [2023-11-19 07:43:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:43:57,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2023-11-19 07:43:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:57,698 INFO L225 Difference]: With dead ends: 718 [2023-11-19 07:43:57,698 INFO L226 Difference]: Without dead ends: 489 [2023-11-19 07:43:57,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:57,706 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 138 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:57,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 458 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:43:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-19 07:43:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 394. [2023-11-19 07:43:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 320 states have (on average 1.50625) internal successors, (482), 325 states have internal predecessors, (482), 61 states have call successors, (61), 12 states have call predecessors, (61), 12 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-19 07:43:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 604 transitions. [2023-11-19 07:43:57,820 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 604 transitions. Word has length 203 [2023-11-19 07:43:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 604 transitions. [2023-11-19 07:43:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:43:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 604 transitions. [2023-11-19 07:43:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-19 07:43:57,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:57,851 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:57,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:58,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:58,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:58,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2053723904, now seen corresponding path program 1 times [2023-11-19 07:43:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177395185] [2023-11-19 07:43:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:58,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:43:58,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525323285] [2023-11-19 07:43:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:58,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:58,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:58,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:58,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:43:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:58,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:58,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:43:58,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177395185] [2023-11-19 07:43:58,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:43:58,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525323285] [2023-11-19 07:43:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525323285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:58,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:58,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:58,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116577238] [2023-11-19 07:43:58,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:58,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:58,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:58,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:58,386 INFO L87 Difference]: Start difference. First operand 394 states and 604 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:43:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:58,482 INFO L93 Difference]: Finished difference Result 1053 states and 1587 transitions. [2023-11-19 07:43:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:58,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2023-11-19 07:43:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:58,492 INFO L225 Difference]: With dead ends: 1053 [2023-11-19 07:43:58,492 INFO L226 Difference]: Without dead ends: 662 [2023-11-19 07:43:58,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:58,495 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 132 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 314 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 [2023-11-19 07:43:58,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 314 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-19 07:43:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 406. [2023-11-19 07:43:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 332 states have (on average 1.4969879518072289) internal successors, (497), 337 states have internal predecessors, (497), 61 states have call successors, (61), 12 states have call predecessors, (61), 12 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-19 07:43:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 619 transitions. [2023-11-19 07:43:58,570 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 619 transitions. Word has length 203 [2023-11-19 07:43:58,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:58,571 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 619 transitions. [2023-11-19 07:43:58,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:43:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 619 transitions. [2023-11-19 07:43:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-19 07:43:58,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:58,577 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:58,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:58,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:58,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1545102878, now seen corresponding path program 1 times [2023-11-19 07:43:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022971449] [2023-11-19 07:43:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:58,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:43:58,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015823236] [2023-11-19 07:43:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:58,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:58,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:58,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:58,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:43:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:59,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:43:59,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-11-19 07:43:59,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 07:43:59,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022971449] [2023-11-19 07:43:59,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:43:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015823236] [2023-11-19 07:43:59,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015823236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:59,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:43:59,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:43:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871096786] [2023-11-19 07:43:59,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:59,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:43:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:43:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:43:59,566 INFO L87 Difference]: Start difference. First operand 406 states and 619 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-19 07:44:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:00,193 INFO L93 Difference]: Finished difference Result 872 states and 1309 transitions. [2023-11-19 07:44:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:44:00,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 203 [2023-11-19 07:44:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:00,198 INFO L225 Difference]: With dead ends: 872 [2023-11-19 07:44:00,199 INFO L226 Difference]: Without dead ends: 469 [2023-11-19 07:44:00,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:44:00,201 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 312 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:00,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 449 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:44:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-19 07:44:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 338. [2023-11-19 07:44:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 262 states have (on average 1.3931297709923665) internal successors, (365), 267 states have internal predecessors, (365), 61 states have call successors, (61), 14 states have call predecessors, (61), 14 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-19 07:44:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 487 transitions. [2023-11-19 07:44:00,255 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 487 transitions. Word has length 203 [2023-11-19 07:44:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:00,256 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 487 transitions. [2023-11-19 07:44:00,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-19 07:44:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 487 transitions. [2023-11-19 07:44:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-19 07:44:00,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:00,260 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:00,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:00,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:00,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1246725612, now seen corresponding path program 1 times [2023-11-19 07:44:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686869733] [2023-11-19 07:44:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:00,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:00,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049456153] [2023-11-19 07:44:00,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:00,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:00,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:00,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:44:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:00,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:44:00,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:44:00,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686869733] [2023-11-19 07:44:00,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049456153] [2023-11-19 07:44:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049456153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:44:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759887311] [2023-11-19 07:44:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:00,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:44:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:44:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:00,756 INFO L87 Difference]: Start difference. First operand 338 states and 487 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:00,987 INFO L93 Difference]: Finished difference Result 763 states and 1103 transitions. [2023-11-19 07:44:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:44:00,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2023-11-19 07:44:00,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:00,991 INFO L225 Difference]: With dead ends: 763 [2023-11-19 07:44:00,991 INFO L226 Difference]: Without dead ends: 412 [2023-11-19 07:44:00,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:00,993 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 153 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:00,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 690 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:44:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-19 07:44:01,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 338. [2023-11-19 07:44:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 262 states have (on average 1.381679389312977) internal successors, (362), 267 states have internal predecessors, (362), 61 states have call successors, (61), 14 states have call predecessors, (61), 14 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-19 07:44:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 484 transitions. [2023-11-19 07:44:01,044 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 484 transitions. Word has length 204 [2023-11-19 07:44:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:01,045 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 484 transitions. [2023-11-19 07:44:01,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 484 transitions. [2023-11-19 07:44:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 07:44:01,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:01,049 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:01,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:01,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:01,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:01,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash 912944743, now seen corresponding path program 1 times [2023-11-19 07:44:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997937605] [2023-11-19 07:44:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:01,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:01,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787496502] [2023-11-19 07:44:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:01,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:01,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:01,306 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:01,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:44:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:01,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:44:01,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-19 07:44:01,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 07:44:02,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997937605] [2023-11-19 07:44:02,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787496502] [2023-11-19 07:44:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787496502] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:02,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:02,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-19 07:44:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320191984] [2023-11-19 07:44:02,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:44:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:44:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:44:02,288 INFO L87 Difference]: Start difference. First operand 338 states and 484 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-19 07:44:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:03,621 INFO L93 Difference]: Finished difference Result 1163 states and 1636 transitions. [2023-11-19 07:44:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-19 07:44:03,622 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) Word has length 205 [2023-11-19 07:44:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:03,628 INFO L225 Difference]: With dead ends: 1163 [2023-11-19 07:44:03,629 INFO L226 Difference]: Without dead ends: 828 [2023-11-19 07:44:03,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 07:44:03,632 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 747 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:03,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 722 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:44:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-11-19 07:44:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 527. [2023-11-19 07:44:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 402 states have (on average 1.3582089552238805) internal successors, (546), 410 states have internal predecessors, (546), 102 states have call successors, (102), 22 states have call predecessors, (102), 22 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-19 07:44:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 750 transitions. [2023-11-19 07:44:03,716 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 750 transitions. Word has length 205 [2023-11-19 07:44:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:03,717 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 750 transitions. [2023-11-19 07:44:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-19 07:44:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 750 transitions. [2023-11-19 07:44:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 07:44:03,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:03,723 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:03,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:03,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:03,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1557554692, now seen corresponding path program 1 times [2023-11-19 07:44:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728988690] [2023-11-19 07:44:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:03,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:03,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400634011] [2023-11-19 07:44:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:03,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:03,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:03,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:03,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:44:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:04,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:44:04,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-11-19 07:44:04,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 07:44:04,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:04,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728988690] [2023-11-19 07:44:04,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:04,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400634011] [2023-11-19 07:44:04,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400634011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:04,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:04,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-19 07:44:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721406603] [2023-11-19 07:44:04,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:44:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:44:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:44:04,737 INFO L87 Difference]: Start difference. First operand 527 states and 750 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-19 07:44:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:05,494 INFO L93 Difference]: Finished difference Result 1154 states and 1640 transitions. [2023-11-19 07:44:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:44:05,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 205 [2023-11-19 07:44:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:05,500 INFO L225 Difference]: With dead ends: 1154 [2023-11-19 07:44:05,500 INFO L226 Difference]: Without dead ends: 630 [2023-11-19 07:44:05,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:44:05,505 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 166 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:05,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 647 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:44:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-19 07:44:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 527. [2023-11-19 07:44:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 402 states have (on average 1.3507462686567164) internal successors, (543), 410 states have internal predecessors, (543), 102 states have call successors, (102), 22 states have call predecessors, (102), 22 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-19 07:44:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 747 transitions. [2023-11-19 07:44:05,574 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 747 transitions. Word has length 205 [2023-11-19 07:44:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:05,575 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 747 transitions. [2023-11-19 07:44:05,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-19 07:44:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 747 transitions. [2023-11-19 07:44:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 07:44:05,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:05,579 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:05,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:05,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:05,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:05,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1403858925, now seen corresponding path program 1 times [2023-11-19 07:44:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:05,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590812814] [2023-11-19 07:44:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:05,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:05,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:05,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677650732] [2023-11-19 07:44:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:05,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:05,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:05,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:44:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:06,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:44:06,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1012 proven. 108 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2023-11-19 07:44:06,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 66 proven. 111 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-19 07:44:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590812814] [2023-11-19 07:44:07,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677650732] [2023-11-19 07:44:07,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677650732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:07,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:07,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:44:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013596937] [2023-11-19 07:44:07,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:07,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:44:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:44:07,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:44:07,017 INFO L87 Difference]: Start difference. First operand 527 states and 747 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 07:44:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:07,446 INFO L93 Difference]: Finished difference Result 1056 states and 1471 transitions. [2023-11-19 07:44:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:44:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 206 [2023-11-19 07:44:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:07,451 INFO L225 Difference]: With dead ends: 1056 [2023-11-19 07:44:07,451 INFO L226 Difference]: Without dead ends: 486 [2023-11-19 07:44:07,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:44:07,454 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 63 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:07,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 309 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:44:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-19 07:44:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 464. [2023-11-19 07:44:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 335 states have (on average 1.2417910447761193) internal successors, (416), 343 states have internal predecessors, (416), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-19 07:44:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 620 transitions. [2023-11-19 07:44:07,525 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 620 transitions. Word has length 206 [2023-11-19 07:44:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:07,527 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 620 transitions. [2023-11-19 07:44:07,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 07:44:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 620 transitions. [2023-11-19 07:44:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 07:44:07,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:07,534 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:07,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:07,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:44:07,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:07,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1958711631, now seen corresponding path program 1 times [2023-11-19 07:44:07,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:07,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869352773] [2023-11-19 07:44:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:07,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:07,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642170064] [2023-11-19 07:44:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:07,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:07,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:07,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:44:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:08,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:44:08,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:44:08,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869352773] [2023-11-19 07:44:08,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642170064] [2023-11-19 07:44:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642170064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:08,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:44:08,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118321789] [2023-11-19 07:44:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:08,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:08,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:44:08,094 INFO L87 Difference]: Start difference. First operand 464 states and 620 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:08,250 INFO L93 Difference]: Finished difference Result 1041 states and 1388 transitions. [2023-11-19 07:44:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:44:08,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2023-11-19 07:44:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:08,256 INFO L225 Difference]: With dead ends: 1041 [2023-11-19 07:44:08,256 INFO L226 Difference]: Without dead ends: 580 [2023-11-19 07:44:08,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:08,259 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 134 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:08,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 372 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:44:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-19 07:44:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 572. [2023-11-19 07:44:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 425 states have (on average 1.2470588235294118) internal successors, (530), 436 states have internal predecessors, (530), 114 states have call successors, (114), 32 states have call predecessors, (114), 32 states have return successors, (114), 103 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 07:44:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 758 transitions. [2023-11-19 07:44:08,360 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 758 transitions. Word has length 206 [2023-11-19 07:44:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:08,361 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 758 transitions. [2023-11-19 07:44:08,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 758 transitions. [2023-11-19 07:44:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 07:44:08,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:08,365 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:08,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:08,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:44:08,587 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:08,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1635991753, now seen corresponding path program 1 times [2023-11-19 07:44:08,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:08,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680164844] [2023-11-19 07:44:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:08,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:08,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063384632] [2023-11-19 07:44:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:08,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:08,633 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:08,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:44:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:08,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:44:08,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 62 proven. 174 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:44:19,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:44:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:29,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680164844] [2023-11-19 07:44:29,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063384632] [2023-11-19 07:44:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063384632] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:29,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:29,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-11-19 07:44:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25626634] [2023-11-19 07:44:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:44:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:44:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:44:29,612 INFO L87 Difference]: Start difference. First operand 572 states and 758 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:31,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:31,696 INFO L93 Difference]: Finished difference Result 1548 states and 2059 transitions. [2023-11-19 07:44:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:44:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2023-11-19 07:44:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:31,703 INFO L225 Difference]: With dead ends: 1548 [2023-11-19 07:44:31,703 INFO L226 Difference]: Without dead ends: 979 [2023-11-19 07:44:31,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:44:31,706 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 290 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:31,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 620 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:44:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-11-19 07:44:31,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 596. [2023-11-19 07:44:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 449 states have (on average 1.2516703786191536) internal successors, (562), 460 states have internal predecessors, (562), 114 states have call successors, (114), 32 states have call predecessors, (114), 32 states have return successors, (114), 103 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 07:44:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 790 transitions. [2023-11-19 07:44:31,808 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 790 transitions. Word has length 206 [2023-11-19 07:44:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:31,809 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 790 transitions. [2023-11-19 07:44:31,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 790 transitions. [2023-11-19 07:44:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 07:44:31,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:31,812 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:31,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:44:32,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:32,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1776540363, now seen corresponding path program 1 times [2023-11-19 07:44:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675827503] [2023-11-19 07:44:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:32,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:32,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:32,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062416190] [2023-11-19 07:44:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:32,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:32,050 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:32,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:44:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:32,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:44:32,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 07:44:32,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:32,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675827503] [2023-11-19 07:44:32,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062416190] [2023-11-19 07:44:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062416190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:32,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:32,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:44:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748575504] [2023-11-19 07:44:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:32,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:32,882 INFO L87 Difference]: Start difference. First operand 596 states and 790 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:33,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:33,340 INFO L93 Difference]: Finished difference Result 1548 states and 2074 transitions. [2023-11-19 07:44:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2023-11-19 07:44:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:33,348 INFO L225 Difference]: With dead ends: 1548 [2023-11-19 07:44:33,348 INFO L226 Difference]: Without dead ends: 955 [2023-11-19 07:44:33,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:44:33,351 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 170 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:33,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 518 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:44:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-11-19 07:44:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 680. [2023-11-19 07:44:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 497 states have (on average 1.2374245472837022) internal successors, (615), 508 states have internal predecessors, (615), 145 states have call successors, (145), 37 states have call predecessors, (145), 37 states have return successors, (145), 134 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-19 07:44:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 905 transitions. [2023-11-19 07:44:33,473 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 905 transitions. Word has length 206 [2023-11-19 07:44:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:33,473 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 905 transitions. [2023-11-19 07:44:33,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 07:44:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 905 transitions. [2023-11-19 07:44:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 07:44:33,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:33,476 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:33,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:33,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:44:33,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:33,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -287236281, now seen corresponding path program 1 times [2023-11-19 07:44:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:33,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627843852] [2023-11-19 07:44:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:33,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:33,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715980584] [2023-11-19 07:44:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:33,717 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:33,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:44:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:33,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:44:33,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-19 07:44:34,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 07:44:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627843852] [2023-11-19 07:44:35,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:44:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715980584] [2023-11-19 07:44:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715980584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:35,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:35,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-19 07:44:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427302791] [2023-11-19 07:44:35,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:44:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:44:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:44:35,228 INFO L87 Difference]: Start difference. First operand 680 states and 905 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (62), 2 states have call predecessors, (62), 4 states have call successors, (62) [2023-11-19 07:44:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:37,111 INFO L93 Difference]: Finished difference Result 1880 states and 2495 transitions. [2023-11-19 07:44:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:44:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (62), 2 states have call predecessors, (62), 4 states have call successors, (62) Word has length 206 [2023-11-19 07:44:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:37,121 INFO L225 Difference]: With dead ends: 1880 [2023-11-19 07:44:37,121 INFO L226 Difference]: Without dead ends: 1281 [2023-11-19 07:44:37,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=1076, Unknown=0, NotChecked=0, Total=1482 [2023-11-19 07:44:37,125 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 980 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:37,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 620 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:44:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-11-19 07:44:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 676. [2023-11-19 07:44:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 493 states have (on average 1.2251521298174441) internal successors, (604), 504 states have internal predecessors, (604), 145 states have call successors, (145), 37 states have call predecessors, (145), 37 states have return successors, (145), 134 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-19 07:44:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 894 transitions. [2023-11-19 07:44:37,318 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 894 transitions. Word has length 206 [2023-11-19 07:44:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:37,319 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 894 transitions. [2023-11-19 07:44:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (62), 2 states have call predecessors, (62), 4 states have call successors, (62) [2023-11-19 07:44:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 894 transitions. [2023-11-19 07:44:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 07:44:37,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:37,322 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:37,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:37,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:44:37,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:37,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1825804888, now seen corresponding path program 1 times [2023-11-19 07:44:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047611693] [2023-11-19 07:44:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:37,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:44:37,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461368629] [2023-11-19 07:44:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:37,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:37,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:37,579 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:37,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec78e8f5-c2fd-45f6-b5b8-c0cb6b19c69f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:44:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:37,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:44:37,812 INFO L285 TraceCheckSpWp]: Computing forward predicates...