./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:41:33,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:41:34,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:41:34,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:41:34,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:41:34,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:41:34,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:41:34,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:41:34,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:41:34,119 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:41:34,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:41:34,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:41:34,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:41:34,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:41:34,127 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:41:34,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:41:34,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:41:34,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:41:34,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:41:34,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:41:34,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:41:34,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:41:34,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:41:34,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:41:34,138 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:41:34,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:41:34,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:41:34,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:41:34,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:41:34,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:41:34,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:41:34,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:34,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:41:34,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:41:34,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:41:34,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:41:34,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:41:34,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:41:34,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:41:34,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:41:34,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:41:34,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:41:34,146 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_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd [2023-11-23 21:41:34,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:41:34,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:41:34,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:41:34,495 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:41:34,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:41:34,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2023-11-23 21:41:37,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:41:37,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:41:37,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2023-11-23 21:41:37,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/data/0fd0be594/2e088989378449759c432e515000df73/FLAG85d1ca22f [2023-11-23 21:41:38,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/data/0fd0be594/2e088989378449759c432e515000df73 [2023-11-23 21:41:38,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:41:38,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:41:38,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:38,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:41:38,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:41:38,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1e7b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38, skipping insertion in model container [2023-11-23 21:41:38,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:41:38,230 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_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2023-11-23 21:41:38,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:41:38,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:41:38,361 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_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2023-11-23 21:41:38,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:41:38,446 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:41:38,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38 WrapperNode [2023-11-23 21:41:38,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:38,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:41:38,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:41:38,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:41:38,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,555 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 258 [2023-11-23 21:41:38,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:41:38,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:41:38,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:41:38,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:41:38,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,582 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,629 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 21:41:38,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:41:38,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:41:38,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:41:38,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:41:38,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (1/1) ... [2023-11-23 21:41:38,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:38,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:38,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:41:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:41:38,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:41:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:41:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:41:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:41:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:41:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:41:38,923 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:41:38,925 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:41:39,661 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:41:39,696 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:41:39,696 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:41:39,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:41:39 BoogieIcfgContainer [2023-11-23 21:41:39,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:41:39,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:41:39,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:41:39,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:41:39,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:41:38" (1/3) ... [2023-11-23 21:41:39,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d51d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:41:39, skipping insertion in model container [2023-11-23 21:41:39,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:38" (2/3) ... [2023-11-23 21:41:39,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d51d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:41:39, skipping insertion in model container [2023-11-23 21:41:39,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:41:39" (3/3) ... [2023-11-23 21:41:39,708 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2023-11-23 21:41:39,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:41:39,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:41:39,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:41:39,804 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;@1d5560f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:41:39,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:41:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 63 states have internal predecessors, (96), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 21:41:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-23 21:41:39,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:39,844 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:39,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:39,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash -331034907, now seen corresponding path program 1 times [2023-11-23 21:41:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:39,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596803321] [2023-11-23 21:41:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:40,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596803321] [2023-11-23 21:41:40,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:41:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660730445] [2023-11-23 21:41:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:40,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:40,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:40,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:40,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:41:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:40,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:41:40,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-11-23 21:41:40,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:41:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660730445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:41:40,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:41:40,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:41:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595963474] [2023-11-23 21:41:40,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:41:40,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:41:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:41:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:41:40,577 INFO L87 Difference]: Start difference. First operand has 96 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 63 states have internal predecessors, (96), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 21:41:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:40,654 INFO L93 Difference]: Finished difference Result 189 states and 345 transitions. [2023-11-23 21:41:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:41:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 198 [2023-11-23 21:41:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:40,709 INFO L225 Difference]: With dead ends: 189 [2023-11-23 21:41:40,709 INFO L226 Difference]: Without dead ends: 94 [2023-11-23 21:41:40,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:41:40,717 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:40,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:41:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-23 21:41:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-11-23 21:41:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 61 states have internal predecessors, (91), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 21:41:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 153 transitions. [2023-11-23 21:41:40,798 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 153 transitions. Word has length 198 [2023-11-23 21:41:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:40,799 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 153 transitions. [2023-11-23 21:41:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 21:41:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 153 transitions. [2023-11-23 21:41:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-23 21:41:40,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:40,813 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:40,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:41,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:41,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1078675281, now seen corresponding path program 1 times [2023-11-23 21:41:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:41,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007395539] [2023-11-23 21:41:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:41,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:41,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:41,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621640791] [2023-11-23 21:41:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:41,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:41,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:41,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:41:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:41,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:41:41,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-23 21:41:41,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:41:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007395539] [2023-11-23 21:41:41,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621640791] [2023-11-23 21:41:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621640791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:41:41,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:41:41,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:41:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455080584] [2023-11-23 21:41:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:41:41,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:41:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:41:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:41:41,491 INFO L87 Difference]: Start difference. First operand 94 states and 153 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:41,689 INFO L93 Difference]: Finished difference Result 274 states and 444 transitions. [2023-11-23 21:41:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:41:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2023-11-23 21:41:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:41,697 INFO L225 Difference]: With dead ends: 274 [2023-11-23 21:41:41,698 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 21:41:41,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:41:41,701 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 135 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:41,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 389 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:41:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 21:41:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2023-11-23 21:41:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 130 states have (on average 1.5384615384615385) internal successors, (200), 132 states have internal predecessors, (200), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 21:41:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 282 transitions. [2023-11-23 21:41:41,733 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 282 transitions. Word has length 198 [2023-11-23 21:41:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:41,734 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 282 transitions. [2023-11-23 21:41:41,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 282 transitions. [2023-11-23 21:41:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-23 21:41:41,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:41,739 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:41,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:41,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:41,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:41,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1222147309, now seen corresponding path program 1 times [2023-11-23 21:41:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104697984] [2023-11-23 21:41:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:42,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:42,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322084612] [2023-11-23 21:41:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:42,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:42,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:42,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:41:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:42,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:41:42,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-23 21:41:42,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:41:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-23 21:41:43,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104697984] [2023-11-23 21:41:43,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322084612] [2023-11-23 21:41:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322084612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:41:43,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:41:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-23 21:41:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427035388] [2023-11-23 21:41:43,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:41:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:41:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:41:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:41:43,063 INFO L87 Difference]: Start difference. First operand 175 states and 282 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-23 21:41:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:44,332 INFO L93 Difference]: Finished difference Result 742 states and 1156 transitions. [2023-11-23 21:41:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 21:41:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) Word has length 198 [2023-11-23 21:41:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:44,342 INFO L225 Difference]: With dead ends: 742 [2023-11-23 21:41:44,342 INFO L226 Difference]: Without dead ends: 568 [2023-11-23 21:41:44,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:41:44,347 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 421 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:44,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 584 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:41:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-23 21:41:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 224. [2023-11-23 21:41:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 176 states have (on average 1.5284090909090908) internal successors, (269), 178 states have internal predecessors, (269), 41 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 21:41:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 351 transitions. [2023-11-23 21:41:44,410 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 351 transitions. Word has length 198 [2023-11-23 21:41:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:44,411 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 351 transitions. [2023-11-23 21:41:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-23 21:41:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 351 transitions. [2023-11-23 21:41:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-23 21:41:44,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:44,416 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:44,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:44,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:44,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:44,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1315522777, now seen corresponding path program 1 times [2023-11-23 21:41:44,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:44,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294816519] [2023-11-23 21:41:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:44,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:44,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:44,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521079321] [2023-11-23 21:41:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:44,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:44,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:44,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:44,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:41:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:44,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:41:44,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-23 21:41:44,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:41:44,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294816519] [2023-11-23 21:41:44,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521079321] [2023-11-23 21:41:44,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521079321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:41:44,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:41:44,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:41:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759745182] [2023-11-23 21:41:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:41:44,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:41:44,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:41:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:41:44,978 INFO L87 Difference]: Start difference. First operand 224 states and 351 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:45,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:45,237 INFO L93 Difference]: Finished difference Result 692 states and 1062 transitions. [2023-11-23 21:41:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:41:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2023-11-23 21:41:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:45,247 INFO L225 Difference]: With dead ends: 692 [2023-11-23 21:41:45,247 INFO L226 Difference]: Without dead ends: 469 [2023-11-23 21:41:45,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:41:45,254 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 120 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:45,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 611 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:41:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-23 21:41:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 380. [2023-11-23 21:41:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 306 states have (on average 1.5294117647058822) internal successors, (468), 311 states have internal predecessors, (468), 61 states have call successors, (61), 12 states have call predecessors, (61), 12 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 21:41:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 590 transitions. [2023-11-23 21:41:45,328 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 590 transitions. Word has length 199 [2023-11-23 21:41:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:45,329 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 590 transitions. [2023-11-23 21:41:45,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 590 transitions. [2023-11-23 21:41:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-23 21:41:45,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:45,335 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:45,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:45,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:45,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:45,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash -275741902, now seen corresponding path program 1 times [2023-11-23 21:41:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:45,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998753301] [2023-11-23 21:41:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:45,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:45,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:45,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226272999] [2023-11-23 21:41:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:45,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:45,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:45,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:45,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:41:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:45,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:41:45,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-23 21:41:45,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:41:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:45,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998753301] [2023-11-23 21:41:45,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:45,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226272999] [2023-11-23 21:41:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226272999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:41:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:41:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:41:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706641993] [2023-11-23 21:41:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:41:45,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:41:45,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:45,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:41:45,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:41:45,800 INFO L87 Difference]: Start difference. First operand 380 states and 590 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:45,892 INFO L93 Difference]: Finished difference Result 1015 states and 1549 transitions. [2023-11-23 21:41:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:41:45,893 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), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2023-11-23 21:41:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:45,902 INFO L225 Difference]: With dead ends: 1015 [2023-11-23 21:41:45,902 INFO L226 Difference]: Without dead ends: 636 [2023-11-23 21:41:45,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:41:45,905 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 128 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:45,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 303 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:41:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-23 21:41:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 392. [2023-11-23 21:41:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 318 states have (on average 1.5188679245283019) internal successors, (483), 323 states have internal predecessors, (483), 61 states have call successors, (61), 12 states have call predecessors, (61), 12 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 21:41:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 605 transitions. [2023-11-23 21:41:45,995 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 605 transitions. Word has length 199 [2023-11-23 21:41:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:45,996 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 605 transitions. [2023-11-23 21:41:45,996 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), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 605 transitions. [2023-11-23 21:41:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-23 21:41:46,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:46,001 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:46,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:46,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:46,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:46,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:46,210 INFO L85 PathProgramCache]: Analyzing trace with hash -713840044, now seen corresponding path program 1 times [2023-11-23 21:41:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:46,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880331388] [2023-11-23 21:41:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:46,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895820958] [2023-11-23 21:41:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:46,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:46,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:46,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:46,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:41:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:46,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:41:46,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-11-23 21:41:46,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:41:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-23 21:41:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880331388] [2023-11-23 21:41:46,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895820958] [2023-11-23 21:41:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895820958] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:41:46,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:41:46,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-23 21:41:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023475793] [2023-11-23 21:41:46,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:41:46,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:41:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:41:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:41:46,988 INFO L87 Difference]: Start difference. First operand 392 states and 605 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-23 21:41:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:47,663 INFO L93 Difference]: Finished difference Result 845 states and 1282 transitions. [2023-11-23 21:41:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:41:47,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 199 [2023-11-23 21:41:47,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:47,672 INFO L225 Difference]: With dead ends: 845 [2023-11-23 21:41:47,672 INFO L226 Difference]: Without dead ends: 454 [2023-11-23 21:41:47,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:41:47,675 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 239 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:47,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 425 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:41:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-23 21:41:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 324. [2023-11-23 21:41:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 248 states have (on average 1.4153225806451613) internal successors, (351), 253 states have internal predecessors, (351), 61 states have call successors, (61), 14 states have call predecessors, (61), 14 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 21:41:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 473 transitions. [2023-11-23 21:41:47,739 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 473 transitions. Word has length 199 [2023-11-23 21:41:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:47,739 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 473 transitions. [2023-11-23 21:41:47,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-23 21:41:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 473 transitions. [2023-11-23 21:41:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-23 21:41:47,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:47,743 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:47,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:47,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:47,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:47,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash -360601632, now seen corresponding path program 1 times [2023-11-23 21:41:47,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:47,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011542033] [2023-11-23 21:41:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:47,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:48,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:48,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100170816] [2023-11-23 21:41:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:48,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:48,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:48,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:48,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:41:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:48,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:41:48,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-23 21:41:48,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:41:48,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011542033] [2023-11-23 21:41:48,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100170816] [2023-11-23 21:41:48,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100170816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:41:48,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:41:48,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:41:48,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750058980] [2023-11-23 21:41:48,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:41:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:41:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:41:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:41:48,245 INFO L87 Difference]: Start difference. First operand 324 states and 473 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:48,507 INFO L93 Difference]: Finished difference Result 736 states and 1076 transitions. [2023-11-23 21:41:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:41:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-11-23 21:41:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:48,512 INFO L225 Difference]: With dead ends: 736 [2023-11-23 21:41:48,512 INFO L226 Difference]: Without dead ends: 397 [2023-11-23 21:41:48,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:41:48,514 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 155 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:48,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 473 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:41:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-23 21:41:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 324. [2023-11-23 21:41:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 248 states have (on average 1.403225806451613) internal successors, (348), 253 states have internal predecessors, (348), 61 states have call successors, (61), 14 states have call predecessors, (61), 14 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 21:41:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 470 transitions. [2023-11-23 21:41:48,561 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 470 transitions. Word has length 200 [2023-11-23 21:41:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:48,562 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 470 transitions. [2023-11-23 21:41:48,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 470 transitions. [2023-11-23 21:41:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 21:41:48,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:48,565 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:48,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:48,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:48,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -67839957, now seen corresponding path program 1 times [2023-11-23 21:41:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056376594] [2023-11-23 21:41:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:48,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313353825] [2023-11-23 21:41:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:48,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:48,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:48,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:48,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:41:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:49,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:41:49,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-23 21:41:49,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:41:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-23 21:41:49,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:49,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056376594] [2023-11-23 21:41:49,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313353825] [2023-11-23 21:41:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313353825] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:41:49,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:41:49,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-23 21:41:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317445060] [2023-11-23 21:41:49,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:41:49,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:41:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:41:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:41:49,665 INFO L87 Difference]: Start difference. First operand 324 states and 470 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-23 21:41:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:51,190 INFO L93 Difference]: Finished difference Result 1119 states and 1592 transitions. [2023-11-23 21:41:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-23 21:41:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) Word has length 201 [2023-11-23 21:41:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:51,197 INFO L225 Difference]: With dead ends: 1119 [2023-11-23 21:41:51,198 INFO L226 Difference]: Without dead ends: 796 [2023-11-23 21:41:51,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 21:41:51,200 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 645 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:51,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 638 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:41:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-11-23 21:41:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 507. [2023-11-23 21:41:51,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 382 states have (on average 1.3769633507853403) internal successors, (526), 390 states have internal predecessors, (526), 102 states have call successors, (102), 22 states have call predecessors, (102), 22 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-23 21:41:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 730 transitions. [2023-11-23 21:41:51,286 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 730 transitions. Word has length 201 [2023-11-23 21:41:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:51,287 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 730 transitions. [2023-11-23 21:41:51,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-11-23 21:41:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 730 transitions. [2023-11-23 21:41:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 21:41:51,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:51,291 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:51,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:51,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:51,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1754069230, now seen corresponding path program 1 times [2023-11-23 21:41:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101635905] [2023-11-23 21:41:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:51,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112548042] [2023-11-23 21:41:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:51,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:51,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:41:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:51,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:41:51,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-11-23 21:41:52,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:41:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-23 21:41:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:52,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101635905] [2023-11-23 21:41:52,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:52,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112548042] [2023-11-23 21:41:52,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112548042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:41:52,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:41:52,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-23 21:41:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005245740] [2023-11-23 21:41:52,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:41:52,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:41:52,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:41:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:41:52,375 INFO L87 Difference]: Start difference. First operand 507 states and 730 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-23 21:41:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:53,257 INFO L93 Difference]: Finished difference Result 1115 states and 1601 transitions. [2023-11-23 21:41:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 21:41:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 201 [2023-11-23 21:41:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:53,263 INFO L225 Difference]: With dead ends: 1115 [2023-11-23 21:41:53,263 INFO L226 Difference]: Without dead ends: 609 [2023-11-23 21:41:53,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:41:53,266 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 487 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:53,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 604 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:41:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-23 21:41:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 507. [2023-11-23 21:41:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 382 states have (on average 1.369109947643979) internal successors, (523), 390 states have internal predecessors, (523), 102 states have call successors, (102), 22 states have call predecessors, (102), 22 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-23 21:41:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 727 transitions. [2023-11-23 21:41:53,369 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 727 transitions. Word has length 201 [2023-11-23 21:41:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:53,369 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 727 transitions. [2023-11-23 21:41:53,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-23 21:41:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 727 transitions. [2023-11-23 21:41:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-23 21:41:53,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:53,373 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:53,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:53,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:53,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:53,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:53,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1460190847, now seen corresponding path program 1 times [2023-11-23 21:41:53,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:53,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597385093] [2023-11-23 21:41:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:53,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115649166] [2023-11-23 21:41:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:53,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:53,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:53,622 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:53,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:41:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:53,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:41:53,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1012 proven. 108 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2023-11-23 21:41:54,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:41:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 66 proven. 111 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-23 21:41:54,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:54,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597385093] [2023-11-23 21:41:54,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:54,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115649166] [2023-11-23 21:41:54,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115649166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:41:54,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:41:54,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 21:41:54,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200460453] [2023-11-23 21:41:54,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:41:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:41:54,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:41:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:41:54,729 INFO L87 Difference]: Start difference. First operand 507 states and 727 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-23 21:41:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:55,152 INFO L93 Difference]: Finished difference Result 1018 states and 1433 transitions. [2023-11-23 21:41:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:41:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 202 [2023-11-23 21:41:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:55,156 INFO L225 Difference]: With dead ends: 1018 [2023-11-23 21:41:55,156 INFO L226 Difference]: Without dead ends: 466 [2023-11-23 21:41:55,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:41:55,159 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 97 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:55,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 283 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:41:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-23 21:41:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 444. [2023-11-23 21:41:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 315 states have (on average 1.2571428571428571) internal successors, (396), 323 states have internal predecessors, (396), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-23 21:41:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 600 transitions. [2023-11-23 21:41:55,232 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 600 transitions. Word has length 202 [2023-11-23 21:41:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:55,233 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 600 transitions. [2023-11-23 21:41:55,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-23 21:41:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 600 transitions. [2023-11-23 21:41:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-23 21:41:55,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:55,236 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:55,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:55,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:41:55,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:55,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1062447325, now seen corresponding path program 1 times [2023-11-23 21:41:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344761620] [2023-11-23 21:41:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:55,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:55,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38053175] [2023-11-23 21:41:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:55,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:55,495 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:55,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:41:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:55,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:41:55,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:41:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-23 21:41:55,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:41:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:41:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344761620] [2023-11-23 21:41:55,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:41:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38053175] [2023-11-23 21:41:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38053175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:41:55,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:41:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:41:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498929681] [2023-11-23 21:41:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:41:55,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:41:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:41:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:41:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:41:55,737 INFO L87 Difference]: Start difference. First operand 444 states and 600 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:41:55,892 INFO L93 Difference]: Finished difference Result 997 states and 1344 transitions. [2023-11-23 21:41:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:41:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2023-11-23 21:41:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:41:55,897 INFO L225 Difference]: With dead ends: 997 [2023-11-23 21:41:55,897 INFO L226 Difference]: Without dead ends: 554 [2023-11-23 21:41:55,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:41:55,900 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 132 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:41:55,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 349 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:41:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-23 21:41:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 546. [2023-11-23 21:41:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 399 states have (on average 1.263157894736842) internal successors, (504), 410 states have internal predecessors, (504), 114 states have call successors, (114), 32 states have call predecessors, (114), 32 states have return successors, (114), 103 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-23 21:41:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 732 transitions. [2023-11-23 21:41:55,986 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 732 transitions. Word has length 202 [2023-11-23 21:41:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:41:55,988 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 732 transitions. [2023-11-23 21:41:55,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:41:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 732 transitions. [2023-11-23 21:41:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-23 21:41:55,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:55,996 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:56,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:41:56,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:41:56,211 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:56,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1744773667, now seen corresponding path program 1 times [2023-11-23 21:41:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631806099] [2023-11-23 21:41:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:56,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:41:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864127331] [2023-11-23 21:41:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:56,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:41:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:56,238 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:41:56,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:41:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:41:56,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-23 21:41:56,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 948 proven. 420 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-11-23 21:42:11,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:42:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-23 21:42:22,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631806099] [2023-11-23 21:42:22,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:42:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864127331] [2023-11-23 21:42:22,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864127331] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:22,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:42:22,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [34] total 41 [2023-11-23 21:42:22,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970123890] [2023-11-23 21:42:22,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:22,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:42:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:42:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1296, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 21:42:22,176 INFO L87 Difference]: Start difference. First operand 546 states and 732 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:42:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:23,980 INFO L93 Difference]: Finished difference Result 1478 states and 1989 transitions. [2023-11-23 21:42:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:42:23,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2023-11-23 21:42:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:23,991 INFO L225 Difference]: With dead ends: 1478 [2023-11-23 21:42:23,991 INFO L226 Difference]: Without dead ends: 933 [2023-11-23 21:42:23,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=395, Invalid=1767, Unknown=0, NotChecked=0, Total=2162 [2023-11-23 21:42:23,995 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 284 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:23,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 640 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:42:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-11-23 21:42:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 570. [2023-11-23 21:42:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 423 states have (on average 1.2671394799054374) internal successors, (536), 434 states have internal predecessors, (536), 114 states have call successors, (114), 32 states have call predecessors, (114), 32 states have return successors, (114), 103 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-23 21:42:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 764 transitions. [2023-11-23 21:42:24,106 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 764 transitions. Word has length 202 [2023-11-23 21:42:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:24,106 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 764 transitions. [2023-11-23 21:42:24,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:42:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 764 transitions. [2023-11-23 21:42:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-23 21:42:24,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:24,109 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:24,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:24,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:42:24,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:24,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1610760161, now seen corresponding path program 1 times [2023-11-23 21:42:24,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:24,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131943706] [2023-11-23 21:42:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:24,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:24,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:42:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51415908] [2023-11-23 21:42:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:24,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:24,348 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:24,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea0e96a-dece-4cf9-a0b8-d9f9e9cdbe13/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:42:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:24,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 21:42:24,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 62 proven. 174 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-23 21:42:26,332 INFO L327 TraceCheckSpWp]: Computing backward predicates...