./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.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_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/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_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/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_ff117872-b2f6-40bd-bee9-11e3e5d1a332/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 827966aa97f1ef0b10f5000ea004115fefca886471ee13cdd19ef0db3333c41b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:26,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:26,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:54:26,839 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:26,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:26,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:26,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:26,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:26,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:26,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:26,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:26,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:26,870 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:26,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:26,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:26,872 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:26,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:26,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:26,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:26,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:26,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:26,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:26,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:26,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:26,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:26,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:26,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:26,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:26,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:26,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:26,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:26,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:26,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:26,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:26,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:26,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:26,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:26,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:26,886 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:26,886 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_ff117872-b2f6-40bd-bee9-11e3e5d1a332/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827966aa97f1ef0b10f5000ea004115fefca886471ee13cdd19ef0db3333c41b [2023-11-19 07:54:27,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:27,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:27,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:27,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:27,183 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:27,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i [2023-11-19 07:54:30,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:30,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:30,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i [2023-11-19 07:54:30,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/data/e69e7a79f/e007549d526945f882f1c5191f580043/FLAG5dde58dc4 [2023-11-19 07:54:30,889 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/data/e69e7a79f/e007549d526945f882f1c5191f580043 [2023-11-19 07:54:30,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:30,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:30,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:30,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:30,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:30,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445dd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30, skipping insertion in model container [2023-11-19 07:54:30,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:31,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:31,326 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:54:31,963 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_ff117872-b2f6-40bd-bee9-11e3e5d1a332/sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i[64324,64337] [2023-11-19 07:54:32,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:32,400 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:32,417 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:54:32,489 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_ff117872-b2f6-40bd-bee9-11e3e5d1a332/sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i[64324,64337] [2023-11-19 07:54:32,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:33,035 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:33,043 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:33,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33 WrapperNode [2023-11-19 07:54:33,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:33,045 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:33,045 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:33,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:33,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,445 INFO L138 Inliner]: procedures = 621, calls = 5149, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5469 [2023-11-19 07:54:33,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:33,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:33,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:33,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:33,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:33,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:33,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:33,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:33,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (1/1) ... [2023-11-19 07:54:33,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:33,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:33,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:54:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:54:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:54:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:34,145 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:34,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:50,870 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:50,884 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:50,885 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-19 07:54:50,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:50 BoogieIcfgContainer [2023-11-19 07:54:50,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:50,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:50,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:50,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:50,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:30" (1/3) ... [2023-11-19 07:54:50,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467c6f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:50, skipping insertion in model container [2023-11-19 07:54:50,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:33" (2/3) ... [2023-11-19 07:54:50,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467c6f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:50, skipping insertion in model container [2023-11-19 07:54:50,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:50" (3/3) ... [2023-11-19 07:54:50,909 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_71_unsafe.c-amalgamation.i [2023-11-19 07:54:50,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:50,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:54:51,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:51,029 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;@390e3f6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:51,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:54:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.564102564102564) internal successors, (122), 79 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:54:51,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:51,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:51,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:51,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1004607924, now seen corresponding path program 1 times [2023-11-19 07:54:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557344860] [2023-11-19 07:54:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:52,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557344860] [2023-11-19 07:54:52,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557344860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:52,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385554190] [2023-11-19 07:54:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:52,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:52,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:52,387 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.564102564102564) internal successors, (122), 79 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:52,433 INFO L93 Difference]: Finished difference Result 156 states and 238 transitions. [2023-11-19 07:54:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-19 07:54:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:52,449 INFO L225 Difference]: With dead ends: 156 [2023-11-19 07:54:52,449 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:54:52,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 07:54:52,461 INFO L413 NwaCegarLoop]: 101 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, 101 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 07:54:52,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:54:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 07:54:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2933333333333332) internal successors, (97), 75 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-11-19 07:54:52,521 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 47 [2023-11-19 07:54:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:52,522 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-11-19 07:54:52,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-11-19 07:54:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:54:52,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:52,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:52,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:52,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:52,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1047041180, now seen corresponding path program 1 times [2023-11-19 07:54:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:52,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131276318] [2023-11-19 07:54:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:53,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:53,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131276318] [2023-11-19 07:54:53,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131276318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:53,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:53,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:53,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886216098] [2023-11-19 07:54:53,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:53,573 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:53,623 INFO L93 Difference]: Finished difference Result 143 states and 182 transitions. [2023-11-19 07:54:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-19 07:54:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:53,625 INFO L225 Difference]: With dead ends: 143 [2023-11-19 07:54:53,625 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:54:53,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:54:53,627 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:53,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:54:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 07:54:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2023-11-19 07:54:53,642 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 47 [2023-11-19 07:54:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:53,643 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2023-11-19 07:54:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2023-11-19 07:54:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:54:53,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:53,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:53,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:53,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:53,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1402558950, now seen corresponding path program 1 times [2023-11-19 07:54:53,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716883073] [2023-11-19 07:54:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:55,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716883073] [2023-11-19 07:54:55,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716883073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056851301] [2023-11-19 07:54:55,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:55,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:55,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:55,320 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:55,368 INFO L93 Difference]: Finished difference Result 126 states and 159 transitions. [2023-11-19 07:54:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-19 07:54:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:55,375 INFO L225 Difference]: With dead ends: 126 [2023-11-19 07:54:55,376 INFO L226 Difference]: Without dead ends: 78 [2023-11-19 07:54:55,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:54:55,384 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:55,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-19 07:54:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2023-11-19 07:54:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2023-11-19 07:54:55,405 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 47 [2023-11-19 07:54:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:55,405 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2023-11-19 07:54:55,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2023-11-19 07:54:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 07:54:55,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:55,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:55,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:55,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:55,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash -155140392, now seen corresponding path program 1 times [2023-11-19 07:54:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400169121] [2023-11-19 07:54:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:56,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400169121] [2023-11-19 07:54:56,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400169121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844801055] [2023-11-19 07:54:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:56,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:56,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:56,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:54:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:58,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 6109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:54:58,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:58,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:54:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844801055] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:58,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:54:58,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-19 07:54:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118160379] [2023-11-19 07:54:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:58,765 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:58,788 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2023-11-19 07:54:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-19 07:54:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:58,791 INFO L225 Difference]: With dead ends: 110 [2023-11-19 07:54:58,791 INFO L226 Difference]: Without dead ends: 78 [2023-11-19 07:54:58,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:58,793 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:58,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 179 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-19 07:54:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-19 07:54:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 77 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2023-11-19 07:54:58,801 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 49 [2023-11-19 07:54:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:58,802 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2023-11-19 07:54:58,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2023-11-19 07:54:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:54:58,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:58,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:58,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:54:59,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:59,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:59,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1863865619, now seen corresponding path program 1 times [2023-11-19 07:54:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:59,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460018946] [2023-11-19 07:54:59,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:55:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460018946] [2023-11-19 07:55:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460018946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347202253] [2023-11-19 07:55:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:00,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:00,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:00,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:55:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:02,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 6127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:02,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:55:02,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347202253] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:02,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-19 07:55:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160919102] [2023-11-19 07:55:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:02,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:02,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:02,352 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:02,393 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2023-11-19 07:55:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:02,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 07:55:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:02,396 INFO L225 Difference]: With dead ends: 95 [2023-11-19 07:55:02,397 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 07:55:02,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:02,400 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:02,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 179 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 07:55:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-19 07:55:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 78 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2023-11-19 07:55:02,421 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 53 [2023-11-19 07:55:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:02,421 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2023-11-19 07:55:02,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2023-11-19 07:55:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:55:02,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:02,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:02,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:02,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:02,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:02,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1500393266, now seen corresponding path program 1 times [2023-11-19 07:55:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:02,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243213859] [2023-11-19 07:55:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:02,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:04,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243213859] [2023-11-19 07:55:04,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243213859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14150156] [2023-11-19 07:55:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:04,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:04,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:04,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:04,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:55:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:05,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 6145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:55:05,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:05,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:55:05,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14150156] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:05,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:05,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-19 07:55:05,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434580371] [2023-11-19 07:55:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:05,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:05,847 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:05,869 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2023-11-19 07:55:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 07:55:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:05,872 INFO L225 Difference]: With dead ends: 120 [2023-11-19 07:55:05,872 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 07:55:05,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:05,874 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:05,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 175 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 07:55:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-19 07:55:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2023-11-19 07:55:05,884 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 57 [2023-11-19 07:55:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:05,885 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2023-11-19 07:55:05,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2023-11-19 07:55:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:55:05,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:05,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:05,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:06,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:55:06,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:06,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash 309701846, now seen corresponding path program 1 times [2023-11-19 07:55:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793891733] [2023-11-19 07:55:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:55:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793891733] [2023-11-19 07:55:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793891733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748497857] [2023-11-19 07:55:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:07,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:07,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:07,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:07,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:55:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:09,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 6152 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:55:09,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:55:09,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:09,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748497857] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:09,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:09,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-19 07:55:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412508839] [2023-11-19 07:55:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:09,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:09,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:09,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:09,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:09,347 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:09,383 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2023-11-19 07:55:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:09,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-19 07:55:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:09,387 INFO L225 Difference]: With dead ends: 104 [2023-11-19 07:55:09,387 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 07:55:09,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:09,390 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:09,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 175 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 07:55:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-19 07:55:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2023-11-19 07:55:09,404 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 61 [2023-11-19 07:55:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:09,405 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2023-11-19 07:55:09,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2023-11-19 07:55:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:55:09,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:09,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:09,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:09,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:55:09,636 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:09,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash -961057762, now seen corresponding path program 1 times [2023-11-19 07:55:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:09,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736388291] [2023-11-19 07:55:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736388291] [2023-11-19 07:55:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736388291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388665586] [2023-11-19 07:55:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:11,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:11,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:55:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:12,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 6159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:55:12,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:12,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:55:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388665586] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:12,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:12,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-19 07:55:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123236505] [2023-11-19 07:55:12,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:12,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:12,881 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:12,899 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2023-11-19 07:55:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-19 07:55:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:12,902 INFO L225 Difference]: With dead ends: 88 [2023-11-19 07:55:12,902 INFO L226 Difference]: Without dead ends: 82 [2023-11-19 07:55:12,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:12,903 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:12,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 175 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-19 07:55:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-19 07:55:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 81 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2023-11-19 07:55:12,912 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 65 [2023-11-19 07:55:12,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:12,912 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2023-11-19 07:55:12,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2023-11-19 07:55:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:55:12,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:12,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:12,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:13,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:55:13,139 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:13,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:13,139 INFO L85 PathProgramCache]: Analyzing trace with hash 140476070, now seen corresponding path program 1 times [2023-11-19 07:55:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:13,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656731526] [2023-11-19 07:55:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:55:14,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656731526] [2023-11-19 07:55:14,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656731526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821767085] [2023-11-19 07:55:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:14,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:14,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff117872-b2f6-40bd-bee9-11e3e5d1a332/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process