./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-71.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_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/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_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-71.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/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_6b609713-694a-4b9c-b248-4070944da3c7/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 ef425419d893cdf8f2db575b031c5b203ea887f7ed28e92ca0beafffac1fc1ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:36:43,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:36:43,911 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:36:43,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:36:43,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:36:43,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:36:43,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:36:43,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:36:43,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:36:43,947 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:36:43,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:36:43,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:36:43,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:36:43,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:36:43,953 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:36:43,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:36:43,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:36:43,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:36:43,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:36:43,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:36:43,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:36:43,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:36:43,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:36:43,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:36:43,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:36:43,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:36:43,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:36:43,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:36:43,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:36:43,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:36:43,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:36:43,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:36:43,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:36:43,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:36:43,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:36:43,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:36:43,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:36:43,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:36:43,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:36:43,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:36:43,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:36:43,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:36:43,971 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_6b609713-694a-4b9c-b248-4070944da3c7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef425419d893cdf8f2db575b031c5b203ea887f7ed28e92ca0beafffac1fc1ee [2023-11-23 21:36:44,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:36:44,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:36:44,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:36:44,345 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:36:44,345 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:36:44,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-71.i [2023-11-23 21:36:47,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:36:48,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:36:48,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-71.i [2023-11-23 21:36:48,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/data/591ca27cd/2255156630e04ccc915a1f6dcab9b3a8/FLAGfc867be6c [2023-11-23 21:36:48,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/data/591ca27cd/2255156630e04ccc915a1f6dcab9b3a8 [2023-11-23 21:36:48,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:36:48,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:36:48,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:36:48,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:36:48,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:36:48,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:48,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de8a484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48, skipping insertion in model container [2023-11-23 21:36:48,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:48,188 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:36:48,421 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_6b609713-694a-4b9c-b248-4070944da3c7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-71.i[916,929] [2023-11-23 21:36:48,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:36:48,742 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:36:48,758 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_6b609713-694a-4b9c-b248-4070944da3c7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-71.i[916,929] [2023-11-23 21:36:48,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:36:48,917 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:36:48,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48 WrapperNode [2023-11-23 21:36:48,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:36:48,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:36:48,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:36:48,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:36:48,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:48,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,090 INFO L138 Inliner]: procedures = 26, calls = 110, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 772 [2023-11-23 21:36:49,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:36:49,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:36:49,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:36:49,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:36:49,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,120 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,178 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 21:36:49,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:36:49,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:36:49,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:36:49,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:36:49,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (1/1) ... [2023-11-23 21:36:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:36:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:36:49,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:36:49,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:36:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:36:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:36:49,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:36:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:36:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:36:49,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:36:49,525 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:36:49,528 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:36:50,835 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:36:50,903 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:36:50,904 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:36:50,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:36:50 BoogieIcfgContainer [2023-11-23 21:36:50,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:36:50,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:36:50,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:36:50,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:36:50,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:36:48" (1/3) ... [2023-11-23 21:36:50,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4efd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:36:50, skipping insertion in model container [2023-11-23 21:36:50,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:36:48" (2/3) ... [2023-11-23 21:36:50,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4efd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:36:50, skipping insertion in model container [2023-11-23 21:36:50,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:36:50" (3/3) ... [2023-11-23 21:36:50,914 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-71.i [2023-11-23 21:36:50,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:36:50,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:36:51,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:36:51,074 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;@66ad4e81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:36:51,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:36:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 202 states have (on average 1.6534653465346534) internal successors, (334), 203 states have internal predecessors, (334), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-23 21:36:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-11-23 21:36:51,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:51,132 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:51,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1620831971, now seen corresponding path program 1 times [2023-11-23 21:36:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:51,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441456073] [2023-11-23 21:36:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:51,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:51,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:51,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441456073] [2023-11-23 21:36:51,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:36:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952013955] [2023-11-23 21:36:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:36:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:36:51,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:36:51,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:36:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:52,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:36:52,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:36:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 18432 trivial. 0 not checked. [2023-11-23 21:36:52,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:36:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952013955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539392513] [2023-11-23 21:36:52,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:36:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:36:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:36:52,410 INFO L87 Difference]: Start difference. First operand has 302 states, 202 states have (on average 1.6534653465346534) internal successors, (334), 203 states have internal predecessors, (334), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-23 21:36:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:52,553 INFO L93 Difference]: Finished difference Result 601 states and 1151 transitions. [2023-11-23 21:36:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:36:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 2 states have call successors, (97) Word has length 612 [2023-11-23 21:36:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:52,578 INFO L225 Difference]: With dead ends: 601 [2023-11-23 21:36:52,579 INFO L226 Difference]: Without dead ends: 300 [2023-11-23 21:36:52,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 611 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 21:36:52,595 INFO L413 NwaCegarLoop]: 518 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, 518 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 21:36:52,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 518 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-23 21:36:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-11-23 21:36:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 201 states have (on average 1.626865671641791) internal successors, (327), 201 states have internal predecessors, (327), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-23 21:36:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 521 transitions. [2023-11-23 21:36:52,725 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 521 transitions. Word has length 612 [2023-11-23 21:36:52,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:52,727 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 521 transitions. [2023-11-23 21:36:52,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-23 21:36:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 521 transitions. [2023-11-23 21:36:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-11-23 21:36:52,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:52,751 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:52,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:36:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:36:52,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:52,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1749066361, now seen corresponding path program 1 times [2023-11-23 21:36:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224025673] [2023-11-23 21:36:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:52,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:53,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:36:53,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331363923] [2023-11-23 21:36:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:53,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:36:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:36:53,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:36:53,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:36:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:53,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:36:53,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:36:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:36:54,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:36:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224025673] [2023-11-23 21:36:54,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:36:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331363923] [2023-11-23 21:36:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331363923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:54,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:54,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:36:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658394717] [2023-11-23 21:36:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:36:54,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:36:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:36:54,635 INFO L87 Difference]: Start difference. First operand 300 states and 521 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:36:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:56,020 INFO L93 Difference]: Finished difference Result 2130 states and 3673 transitions. [2023-11-23 21:36:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:36:56,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 612 [2023-11-23 21:36:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:56,044 INFO L225 Difference]: With dead ends: 2130 [2023-11-23 21:36:56,045 INFO L226 Difference]: Without dead ends: 1831 [2023-11-23 21:36:56,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:36:56,049 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1838 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:36:56,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 4162 Invalid, 519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [306 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:36:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2023-11-23 21:36:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1813. [2023-11-23 21:36:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1200 states have (on average 1.6091666666666666) internal successors, (1931), 1204 states have internal predecessors, (1931), 604 states have call successors, (604), 8 states have call predecessors, (604), 8 states have return successors, (604), 600 states have call predecessors, (604), 604 states have call successors, (604) [2023-11-23 21:36:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 3139 transitions. [2023-11-23 21:36:56,527 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 3139 transitions. Word has length 612 [2023-11-23 21:36:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:56,530 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 3139 transitions. [2023-11-23 21:36:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:36:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 3139 transitions. [2023-11-23 21:36:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-11-23 21:36:56,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:56,550 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:56,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:36:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:36:56,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:56,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1648507657, now seen corresponding path program 1 times [2023-11-23 21:36:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212863] [2023-11-23 21:36:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:56,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:36:56,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65648956] [2023-11-23 21:36:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:56,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:36:56,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:36:56,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:36:56,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:36:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:57,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:36:57,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:36:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:36:58,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:36:58,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:58,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212863] [2023-11-23 21:36:58,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:36:58,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65648956] [2023-11-23 21:36:58,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65648956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:58,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:58,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258170756] [2023-11-23 21:36:58,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:58,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:58,320 INFO L87 Difference]: Start difference. First operand 1813 states and 3139 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:36:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:58,533 INFO L93 Difference]: Finished difference Result 4532 states and 7848 transitions. [2023-11-23 21:36:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 612 [2023-11-23 21:36:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:58,563 INFO L225 Difference]: With dead ends: 4532 [2023-11-23 21:36:58,563 INFO L226 Difference]: Without dead ends: 2720 [2023-11-23 21:36:58,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 610 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 21:36:58,571 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 237 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:36:58,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1163 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:58,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2023-11-23 21:36:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1813. [2023-11-23 21:36:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1200 states have (on average 1.6091666666666666) internal successors, (1931), 1204 states have internal predecessors, (1931), 604 states have call successors, (604), 8 states have call predecessors, (604), 8 states have return successors, (604), 600 states have call predecessors, (604), 604 states have call successors, (604) [2023-11-23 21:36:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 3139 transitions. [2023-11-23 21:36:59,226 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 3139 transitions. Word has length 612 [2023-11-23 21:36:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:59,230 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 3139 transitions. [2023-11-23 21:36:59,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:36:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 3139 transitions. [2023-11-23 21:36:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-11-23 21:36:59,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:59,241 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:59,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:36:59,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:36:59,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:59,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash -210726331, now seen corresponding path program 1 times [2023-11-23 21:36:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101308201] [2023-11-23 21:36:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:59,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:36:59,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414448280] [2023-11-23 21:36:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:36:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:36:59,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:36:59,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:36:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:59,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:36:59,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:37:00,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:00,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:00,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101308201] [2023-11-23 21:37:00,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:37:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414448280] [2023-11-23 21:37:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414448280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:00,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:00,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:37:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376506675] [2023-11-23 21:37:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:37:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:37:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:37:00,085 INFO L87 Difference]: Start difference. First operand 1813 states and 3139 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:00,371 INFO L93 Difference]: Finished difference Result 5031 states and 8719 transitions. [2023-11-23 21:37:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:37:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 612 [2023-11-23 21:37:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:00,400 INFO L225 Difference]: With dead ends: 5031 [2023-11-23 21:37:00,400 INFO L226 Difference]: Without dead ends: 3219 [2023-11-23 21:37:00,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 610 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 21:37:00,416 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 306 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:00,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1136 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:00,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2023-11-23 21:37:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3209. [2023-11-23 21:37:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 2188 states have (on average 1.6179159049360146) internal successors, (3540), 2200 states have internal predecessors, (3540), 1004 states have call successors, (1004), 16 states have call predecessors, (1004), 16 states have return successors, (1004), 992 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-11-23 21:37:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5548 transitions. [2023-11-23 21:37:00,933 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5548 transitions. Word has length 612 [2023-11-23 21:37:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:00,935 INFO L495 AbstractCegarLoop]: Abstraction has 3209 states and 5548 transitions. [2023-11-23 21:37:00,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5548 transitions. [2023-11-23 21:37:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-11-23 21:37:00,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:00,945 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:00,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:01,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:01,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:01,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash 810342023, now seen corresponding path program 1 times [2023-11-23 21:37:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101244230] [2023-11-23 21:37:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:01,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:37:01,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691009809] [2023-11-23 21:37:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:01,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:01,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:01,247 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:37:01,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:37:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:01,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:37:01,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:37:02,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:02,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101244230] [2023-11-23 21:37:02,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:37:02,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691009809] [2023-11-23 21:37:02,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691009809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:02,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:02,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:37:02,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269374574] [2023-11-23 21:37:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:02,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:37:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:37:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:37:02,479 INFO L87 Difference]: Start difference. First operand 3209 states and 5548 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:02,793 INFO L93 Difference]: Finished difference Result 6419 states and 11096 transitions. [2023-11-23 21:37:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:37:02,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 612 [2023-11-23 21:37:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:02,822 INFO L225 Difference]: With dead ends: 6419 [2023-11-23 21:37:02,822 INFO L226 Difference]: Without dead ends: 3211 [2023-11-23 21:37:02,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 610 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 21:37:02,837 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 258 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:02,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1016 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2023-11-23 21:37:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3209. [2023-11-23 21:37:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 2188 states have (on average 1.6160877513711152) internal successors, (3536), 2200 states have internal predecessors, (3536), 1004 states have call successors, (1004), 16 states have call predecessors, (1004), 16 states have return successors, (1004), 992 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-11-23 21:37:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5544 transitions. [2023-11-23 21:37:03,335 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5544 transitions. Word has length 612 [2023-11-23 21:37:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:03,336 INFO L495 AbstractCegarLoop]: Abstraction has 3209 states and 5544 transitions. [2023-11-23 21:37:03,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5544 transitions. [2023-11-23 21:37:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2023-11-23 21:37:03,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:03,346 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:03,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:03,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:03,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:03,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2087587201, now seen corresponding path program 1 times [2023-11-23 21:37:03,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:03,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879420777] [2023-11-23 21:37:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:03,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:03,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:37:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430601018] [2023-11-23 21:37:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:03,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:03,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:37:03,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:37:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:04,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:37:04,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8946 proven. 111 refuted. 0 times theorem prover too weak. 9567 trivial. 0 not checked. [2023-11-23 21:37:04,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:37:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 177 proven. 111 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-23 21:37:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:05,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879420777] [2023-11-23 21:37:05,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:37:05,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430601018] [2023-11-23 21:37:05,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430601018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:37:05,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:37:05,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-23 21:37:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862738070] [2023-11-23 21:37:05,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:37:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:37:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:37:05,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:37:05,134 INFO L87 Difference]: Start difference. First operand 3209 states and 5544 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-11-23 21:37:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:05,910 INFO L93 Difference]: Finished difference Result 6465 states and 11131 transitions. [2023-11-23 21:37:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:37:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 613 [2023-11-23 21:37:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:05,938 INFO L225 Difference]: With dead ends: 6465 [2023-11-23 21:37:05,939 INFO L226 Difference]: Without dead ends: 3257 [2023-11-23 21:37:05,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1218 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:37:05,953 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 315 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:05,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1030 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:37:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2023-11-23 21:37:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 3225. [2023-11-23 21:37:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 2200 states have (on average 1.5981818181818181) internal successors, (3516), 2212 states have internal predecessors, (3516), 1004 states have call successors, (1004), 20 states have call predecessors, (1004), 20 states have return successors, (1004), 992 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-11-23 21:37:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 5524 transitions. [2023-11-23 21:37:06,516 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 5524 transitions. Word has length 613 [2023-11-23 21:37:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:06,518 INFO L495 AbstractCegarLoop]: Abstraction has 3225 states and 5524 transitions. [2023-11-23 21:37:06,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-11-23 21:37:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 5524 transitions. [2023-11-23 21:37:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-23 21:37:06,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:06,532 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:06,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:06,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:06,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1081627755, now seen corresponding path program 1 times [2023-11-23 21:37:06,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:06,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225645961] [2023-11-23 21:37:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:06,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:37:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078554227] [2023-11-23 21:37:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:06,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:06,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:06,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:37:06,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:37:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:37:07,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:37:07,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225645961] [2023-11-23 21:37:07,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:37:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078554227] [2023-11-23 21:37:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078554227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:37:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609287830] [2023-11-23 21:37:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:37:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:07,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:37:07,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:37:07,349 INFO L87 Difference]: Start difference. First operand 3225 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:07,893 INFO L93 Difference]: Finished difference Result 9673 states and 16570 transitions. [2023-11-23 21:37:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:37:07,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 614 [2023-11-23 21:37:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:07,961 INFO L225 Difference]: With dead ends: 9673 [2023-11-23 21:37:07,963 INFO L226 Difference]: Without dead ends: 6449 [2023-11-23 21:37:07,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 612 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 21:37:07,979 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 513 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:07,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1534 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2023-11-23 21:37:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 6447. [2023-11-23 21:37:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6447 states, 4398 states have (on average 1.5948158253751705) internal successors, (7014), 4422 states have internal predecessors, (7014), 2008 states have call successors, (2008), 40 states have call predecessors, (2008), 40 states have return successors, (2008), 1984 states have call predecessors, (2008), 2008 states have call successors, (2008) [2023-11-23 21:37:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 11030 transitions. [2023-11-23 21:37:09,026 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 11030 transitions. Word has length 614 [2023-11-23 21:37:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:09,027 INFO L495 AbstractCegarLoop]: Abstraction has 6447 states and 11030 transitions. [2023-11-23 21:37:09,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 11030 transitions. [2023-11-23 21:37:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-23 21:37:09,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:09,038 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:09,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:09,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:09,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:09,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1143667369, now seen corresponding path program 1 times [2023-11-23 21:37:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:09,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702464510] [2023-11-23 21:37:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:09,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:09,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:37:09,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24486791] [2023-11-23 21:37:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:09,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:09,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:37:09,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:37:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:09,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:37:09,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:37:10,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702464510] [2023-11-23 21:37:10,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:37:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24486791] [2023-11-23 21:37:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24486791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:10,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:10,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:37:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204753534] [2023-11-23 21:37:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:10,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:37:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:37:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:37:10,706 INFO L87 Difference]: Start difference. First operand 6447 states and 11030 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:14,988 INFO L93 Difference]: Finished difference Result 39067 states and 66872 transitions. [2023-11-23 21:37:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:37:14,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 614 [2023-11-23 21:37:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:15,150 INFO L225 Difference]: With dead ends: 39067 [2023-11-23 21:37:15,150 INFO L226 Difference]: Without dead ends: 32621 [2023-11-23 21:37:15,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:37:15,185 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 2359 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:15,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 3297 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:37:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32621 states. [2023-11-23 21:37:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32621 to 32067. [2023-11-23 21:37:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32067 states, 21826 states have (on average 1.5701456977916246) internal successors, (34270), 21946 states have internal predecessors, (34270), 10040 states have call successors, (10040), 200 states have call predecessors, (10040), 200 states have return successors, (10040), 9920 states have call predecessors, (10040), 10040 states have call successors, (10040) [2023-11-23 21:37:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32067 states to 32067 states and 54350 transitions. [2023-11-23 21:37:20,911 INFO L78 Accepts]: Start accepts. Automaton has 32067 states and 54350 transitions. Word has length 614 [2023-11-23 21:37:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:20,912 INFO L495 AbstractCegarLoop]: Abstraction has 32067 states and 54350 transitions. [2023-11-23 21:37:20,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32067 states and 54350 transitions. [2023-11-23 21:37:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-23 21:37:20,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:20,937 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:20,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:21,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 21:37:21,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:21,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:21,153 INFO L85 PathProgramCache]: Analyzing trace with hash 917661936, now seen corresponding path program 1 times [2023-11-23 21:37:21,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258766506] [2023-11-23 21:37:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:21,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:21,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:37:21,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773181808] [2023-11-23 21:37:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:21,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:21,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:37:21,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b609713-694a-4b9c-b248-4070944da3c7/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:37:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:21,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:37:21,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-23 21:37:21,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:21,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258766506] [2023-11-23 21:37:21,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:37:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773181808] [2023-11-23 21:37:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773181808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:21,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:37:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199829518] [2023-11-23 21:37:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:37:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:37:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:37:21,932 INFO L87 Difference]: Start difference. First operand 32067 states and 54350 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-23 21:37:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:26,701 INFO L93 Difference]: Finished difference Result 89599 states and 151716 transitions. [2023-11-23 21:37:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:37:26,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 615 [2023-11-23 21:37:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:27,009 INFO L225 Difference]: With dead ends: 89599 [2023-11-23 21:37:27,009 INFO L226 Difference]: Without dead ends: 57533 [2023-11-23 21:37:27,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 613 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 21:37:27,120 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 471 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:27,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1012 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57533 states.