./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 6bd28dd8bdd6a36ba62fa0e1c0539c953243d21ed8e8d2c2fe9060a0726f28ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:38:48,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:38:48,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:38:48,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:38:48,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:38:48,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:38:48,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:38:48,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:38:48,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:38:48,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:38:48,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:38:48,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:38:48,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:38:48,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:38:48,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:38:48,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:38:48,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:38:48,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:38:48,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:38:48,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:38:48,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:38:48,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:38:48,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:38:48,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:38:48,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:38:48,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:38:48,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:38:48,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:38:48,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:38:48,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:38:48,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:38:48,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:38:48,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:38:48,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:38:48,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:38:48,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:38:48,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:38:48,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:38:48,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:38:48,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:38:48,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:38:48,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:38:48,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:38:48,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:38:48,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:38:48,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:38:48,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:38:48,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:38:48,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:38:48,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:38:48,174 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:38:48,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:38:48,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:38:48,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:38:48,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:38:48,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:38:48,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:38:48,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:38:48,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:38:48,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:38:48,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:38:48,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:38:48,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:38:48,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:38:48,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:38:48,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:38:48,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:38:48,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:38:48,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:38:48,178 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:38:48,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:38:48,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:38:48,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bd28dd8bdd6a36ba62fa0e1c0539c953243d21ed8e8d2c2fe9060a0726f28ba [2022-11-18 19:38:48,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:38:48,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:38:48,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:38:48,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:38:48,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:38:48,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.2.prop1-func-interl.c [2022-11-18 19:38:48,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/data/52f420b23/4c4580df5d2245269f88404d2453a1ac/FLAG5c67064d6 [2022-11-18 19:38:49,274 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:38:49,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.2.prop1-func-interl.c [2022-11-18 19:38:49,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/data/52f420b23/4c4580df5d2245269f88404d2453a1ac/FLAG5c67064d6 [2022-11-18 19:38:49,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/data/52f420b23/4c4580df5d2245269f88404d2453a1ac [2022-11-18 19:38:49,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:38:49,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:38:49,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:38:49,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:38:49,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:38:49,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:38:49" (1/1) ... [2022-11-18 19:38:49,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fdd5e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:49, skipping insertion in model container [2022-11-18 19:38:49,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:38:49" (1/1) ... [2022-11-18 19:38:49,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:38:49,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:38:49,810 WARN L234 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_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.2.prop1-func-interl.c[1014,1027] [2022-11-18 19:38:50,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:38:50,376 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:38:50,385 WARN L234 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_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.rether.2.prop1-func-interl.c[1014,1027] [2022-11-18 19:38:50,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:38:50,761 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:38:50,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50 WrapperNode [2022-11-18 19:38:50,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:38:50,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:38:50,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:38:50,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:38:50,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:50,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,092 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6393 [2022-11-18 19:38:51,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:38:51,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:38:51,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:38:51,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:38:51,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:38:51,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:38:51,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:38:51,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:38:51,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (1/1) ... [2022-11-18 19:38:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:38:51,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:51,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:38:51,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:38:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:38:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:38:52,350 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:38:52,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:39:11,596 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:39:11,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:39:11,612 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:39:11,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:11 BoogieIcfgContainer [2022-11-18 19:39:11,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:39:11,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:39:11,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:39:11,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:39:11,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:38:49" (1/3) ... [2022-11-18 19:39:11,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb3443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:11, skipping insertion in model container [2022-11-18 19:39:11,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:38:50" (2/3) ... [2022-11-18 19:39:11,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb3443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:11, skipping insertion in model container [2022-11-18 19:39:11,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:11" (3/3) ... [2022-11-18 19:39:11,629 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rether.2.prop1-func-interl.c [2022-11-18 19:39:11,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:39:11,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:39:11,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:39:11,747 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=LoopsAndPotentialCycles, 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;@79f58071, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:39:11,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:39:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 980 states, 978 states have (on average 1.6646216768916156) internal successors, (1628), 979 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 19:39:11,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:11,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:11,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1487933670, now seen corresponding path program 1 times [2022-11-18 19:39:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:11,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350040376] [2022-11-18 19:39:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:12,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350040376] [2022-11-18 19:39:12,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350040376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:12,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:12,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:39:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109110175] [2022-11-18 19:39:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:12,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:12,653 INFO L87 Difference]: Start difference. First operand has 980 states, 978 states have (on average 1.6646216768916156) internal successors, (1628), 979 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:12,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:12,898 INFO L93 Difference]: Finished difference Result 3049 states and 5077 transitions. [2022-11-18 19:39:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:12,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-18 19:39:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:12,920 INFO L225 Difference]: With dead ends: 3049 [2022-11-18 19:39:12,920 INFO L226 Difference]: Without dead ends: 2071 [2022-11-18 19:39:12,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:12,929 INFO L413 NwaCegarLoop]: 1825 mSDtfsCounter, 4842 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:12,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4842 Valid, 3848 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:39:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-11-18 19:39:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 978. [2022-11-18 19:39:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.6622313203684749) internal successors, (1624), 977 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1624 transitions. [2022-11-18 19:39:13,024 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1624 transitions. Word has length 87 [2022-11-18 19:39:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:13,025 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1624 transitions. [2022-11-18 19:39:13,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1624 transitions. [2022-11-18 19:39:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:39:13,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:13,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:13,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:39:13,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1120421926, now seen corresponding path program 1 times [2022-11-18 19:39:13,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:13,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531111173] [2022-11-18 19:39:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:13,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:13,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531111173] [2022-11-18 19:39:13,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531111173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:13,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:13,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:39:13,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522834565] [2022-11-18 19:39:13,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:13,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:13,412 INFO L87 Difference]: Start difference. First operand 978 states and 1624 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:13,564 INFO L93 Difference]: Finished difference Result 3892 states and 6471 transitions. [2022-11-18 19:39:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:13,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-18 19:39:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:13,577 INFO L225 Difference]: With dead ends: 3892 [2022-11-18 19:39:13,577 INFO L226 Difference]: Without dead ends: 2916 [2022-11-18 19:39:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:13,585 INFO L413 NwaCegarLoop]: 1819 mSDtfsCounter, 4832 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4832 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:13,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4832 Valid, 5243 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-11-18 19:39:13,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 980. [2022-11-18 19:39:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.6608784473953013) internal successors, (1626), 979 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1626 transitions. [2022-11-18 19:39:13,621 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1626 transitions. Word has length 88 [2022-11-18 19:39:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:13,623 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1626 transitions. [2022-11-18 19:39:13,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1626 transitions. [2022-11-18 19:39:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:39:13,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:13,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:13,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:39:13,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash 162909364, now seen corresponding path program 1 times [2022-11-18 19:39:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:13,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002334445] [2022-11-18 19:39:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:13,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:13,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002334445] [2022-11-18 19:39:13,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002334445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:13,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:13,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:39:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830776664] [2022-11-18 19:39:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:13,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:39:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:39:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:13,959 INFO L87 Difference]: Start difference. First operand 980 states and 1626 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:14,237 INFO L93 Difference]: Finished difference Result 4018 states and 6677 transitions. [2022-11-18 19:39:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:39:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-18 19:39:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:14,249 INFO L225 Difference]: With dead ends: 4018 [2022-11-18 19:39:14,249 INFO L226 Difference]: Without dead ends: 3040 [2022-11-18 19:39:14,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:39:14,252 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 6370 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6370 SdHoareTripleChecker+Valid, 6860 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:14,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6370 Valid, 6860 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:39:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2022-11-18 19:39:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1100. [2022-11-18 19:39:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 1.6615104640582348) internal successors, (1826), 1099 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1826 transitions. [2022-11-18 19:39:14,285 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1826 transitions. Word has length 89 [2022-11-18 19:39:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:14,285 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1826 transitions. [2022-11-18 19:39:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1826 transitions. [2022-11-18 19:39:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2022-11-18 19:39:14,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:14,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:14,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:39:14,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1851205811, now seen corresponding path program 1 times [2022-11-18 19:39:14,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:14,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692709326] [2022-11-18 19:39:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:14,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:14,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:14,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310544371] [2022-11-18 19:39:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:14,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:14,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:14,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:39:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:27,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 7854 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:39:28,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:31,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:31,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:31,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692709326] [2022-11-18 19:39:31,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:31,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310544371] [2022-11-18 19:39:31,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310544371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:31,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:31,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:39:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99301292] [2022-11-18 19:39:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:31,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:39:31,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:31,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:39:31,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:39:31,695 INFO L87 Difference]: Start difference. First operand 1100 states and 1826 transitions. Second operand has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:32,476 INFO L93 Difference]: Finished difference Result 2928 states and 4863 transitions. [2022-11-18 19:39:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 738 [2022-11-18 19:39:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:32,484 INFO L225 Difference]: With dead ends: 2928 [2022-11-18 19:39:32,485 INFO L226 Difference]: Without dead ends: 1950 [2022-11-18 19:39:32,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:39:32,487 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 2798 mSDsluCounter, 6179 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 7725 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:32,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 7725 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:39:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-11-18 19:39:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1241. [2022-11-18 19:39:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 1.657258064516129) internal successors, (2055), 1240 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 2055 transitions. [2022-11-18 19:39:32,517 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 2055 transitions. Word has length 738 [2022-11-18 19:39:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:32,517 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 2055 transitions. [2022-11-18 19:39:32,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 2055 transitions. [2022-11-18 19:39:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-11-18 19:39:32,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:32,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:32,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:32,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:32,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:32,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1363384695, now seen corresponding path program 1 times [2022-11-18 19:39:32,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:32,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363363177] [2022-11-18 19:39:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:33,121 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:33,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793259150] [2022-11-18 19:39:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:33,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:33,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f724f7-2d1e-4b3b-98ed-51a00717a5f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process