./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bAnd1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd --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 ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:13:54,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:13:54,327 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:13:54,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:13:54,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:13:54,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:13:54,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:13:54,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:13:54,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:13:54,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:13:54,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:13:54,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:13:54,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:13:54,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:13:54,390 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:13:54,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:13:54,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:13:54,390 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:13:54,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:13:54,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:13:54,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:13:54,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:13:54,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:13:54,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:13:54,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:13:54,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:13:54,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:54,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:13:54,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:13:54,395 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd 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 -> ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 [2024-11-13 13:13:54,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:13:54,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:13:54,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:13:54,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:13:54,794 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:13:54,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-crafted/bAnd1.i Unable to find full path for "g++" [2024-11-13 13:13:56,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:13:57,110 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:13:57,110 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/sv-benchmarks/c/array-crafted/bAnd1.i [2024-11-13 13:13:57,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/data/07e9f4c28/2b3ff6fd0d7b423aaa2dcdc46c6b5305/FLAGcdd8669c7 [2024-11-13 13:13:57,144 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/data/07e9f4c28/2b3ff6fd0d7b423aaa2dcdc46c6b5305 [2024-11-13 13:13:57,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:13:57,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:13:57,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:57,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:13:57,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:13:57,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c88ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57, skipping insertion in model container [2024-11-13 13:13:57,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:13:57,427 WARN L250 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_b1c81c3f-fc98-4628-8a50-39f48ccb371d/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2024-11-13 13:13:57,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:57,447 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:13:57,471 WARN L250 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_b1c81c3f-fc98-4628-8a50-39f48ccb371d/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2024-11-13 13:13:57,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:57,488 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:13:57,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57 WrapperNode [2024-11-13 13:13:57,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:57,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:57,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:13:57,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:13:57,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,523 INFO L138 Inliner]: procedures = 16, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 75 [2024-11-13 13:13:57,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:57,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:13:57,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:13:57,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:13:57,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,552 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 8, 11]. 52 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-13 13:13:57,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:13:57,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:13:57,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:13:57,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:13:57,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (1/1) ... [2024-11-13 13:13:57,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:57,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:13:57,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:13:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:13:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:13:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:13:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:13:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:13:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:13:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:13:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:13:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2024-11-13 13:13:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2024-11-13 13:13:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:13:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:13:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:13:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:13:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:13:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:13:57,764 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:13:57,767 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:13:57,977 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-13 13:13:57,977 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:13:57,988 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:13:57,988 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:13:57,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:57 BoogieIcfgContainer [2024-11-13 13:13:57,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:13:57,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:13:57,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:13:57,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:13:57,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:13:57" (1/3) ... [2024-11-13 13:13:57,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0fed3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:57, skipping insertion in model container [2024-11-13 13:13:57,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:57" (2/3) ... [2024-11-13 13:13:58,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0fed3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:57, skipping insertion in model container [2024-11-13 13:13:58,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:57" (3/3) ... [2024-11-13 13:13:58,001 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd1.i [2024-11-13 13:13:58,022 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:13:58,025 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bAnd1.i that has 2 procedures, 28 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 13:13:58,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:58,117 INFO L333 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, 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;@6d65a564, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:58,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:13:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:13:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:13:58,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:58,132 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:58,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:58,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1019880209, now seen corresponding path program 1 times [2024-11-13 13:13:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:58,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292112842] [2024-11-13 13:13:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:13:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:13:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:13:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292112842] [2024-11-13 13:13:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292112842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:58,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367906352] [2024-11-13 13:13:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:58,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:58,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:13:58,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:13:58,842 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:58,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367906352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:58,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 13:13:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245483333] [2024-11-13 13:13:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:58,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:58,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:58,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:58,883 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:13:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:58,926 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-13 13:13:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-13 13:13:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:58,937 INFO L225 Difference]: With dead ends: 54 [2024-11-13 13:13:58,937 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 13:13:58,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:58,948 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:58,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:13:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 13:13:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-13 13:13:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:13:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-13 13:13:58,992 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-13 13:13:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:58,992 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-13 13:13:58,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:13:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-13 13:13:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 13:13:58,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:58,995 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:59,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:13:59,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-13 13:13:59,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:59,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1013210482, now seen corresponding path program 1 times [2024-11-13 13:13:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4554309] [2024-11-13 13:13:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:13:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 13:13:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:13:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:13:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:59,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4554309] [2024-11-13 13:13:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4554309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432824741] [2024-11-13 13:13:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:59,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:59,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:13:59,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:13:59,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:59,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432824741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:59,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:59,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 13:13:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301568496] [2024-11-13 13:13:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:59,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:59,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:59,569 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:13:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:59,618 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-11-13 13:13:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:59,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-13 13:13:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:59,620 INFO L225 Difference]: With dead ends: 49 [2024-11-13 13:13:59,620 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:13:59,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:59,621 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:59,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:13:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:13:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2024-11-13 13:13:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:13:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-13 13:13:59,637 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 30 [2024-11-13 13:13:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:59,637 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-13 13:13:59,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:13:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-13 13:13:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 13:13:59,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:59,639 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:59,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:13:59,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:59,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:59,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:59,841 INFO L85 PathProgramCache]: Analyzing trace with hash 924541634, now seen corresponding path program 1 times [2024-11-13 13:13:59,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:59,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249853661] [2024-11-13 13:13:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:14:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:14:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:14:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:14:00,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:00,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249853661] [2024-11-13 13:14:00,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249853661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:00,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549983130] [2024-11-13 13:14:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:00,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:00,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:00,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:00,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:14:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:14:00,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:14:00,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549983130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:00,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:14:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 13:14:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113304932] [2024-11-13 13:14:00,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:00,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:14:00,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:00,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:14:00,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:14:00,247 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:14:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:00,261 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-13 13:14:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:14:00,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-13 13:14:00,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:00,263 INFO L225 Difference]: With dead ends: 43 [2024-11-13 13:14:00,263 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 13:14:00,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:14:00,264 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:00,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:14:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 13:14:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 13:14:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-13 13:14:00,272 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 39 [2024-11-13 13:14:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:00,273 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-13 13:14:00,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:14:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-13 13:14:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 13:14:00,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:00,275 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:00,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:14:00,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:00,480 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:00,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2143962351, now seen corresponding path program 1 times [2024-11-13 13:14:00,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:00,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494042890] [2024-11-13 13:14:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:00,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:14:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:14:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 13:14:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:14:00,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494042890] [2024-11-13 13:14:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494042890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197561404] [2024-11-13 13:14:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:00,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:00,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:00,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:14:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:14:00,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:14:00,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:14:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197561404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:00,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-13 13:14:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116443000] [2024-11-13 13:14:00,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:00,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:14:00,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:14:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:14:00,975 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:14:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:01,038 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2024-11-13 13:14:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:14:01,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-11-13 13:14:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:01,040 INFO L225 Difference]: With dead ends: 62 [2024-11-13 13:14:01,044 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 13:14:01,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:14:01,045 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:01,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:14:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 13:14:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-11-13 13:14:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-13 13:14:01,059 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 40 [2024-11-13 13:14:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:01,059 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-13 13:14:01,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:14:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-13 13:14:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 13:14:01,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:01,062 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:01,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:14:01,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:01,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:01,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash -115348686, now seen corresponding path program 2 times [2024-11-13 13:14:01,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:01,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709280169] [2024-11-13 13:14:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:01,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:01,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:14:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:01,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:14:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:01,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 13:14:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-13 13:14:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709280169] [2024-11-13 13:14:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709280169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174204887] [2024-11-13 13:14:01,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:14:01,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:01,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:01,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:14:01,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:14:01,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:01,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:14:01,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 13:14:01,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 13:14:01,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174204887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:01,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:01,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-13 13:14:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047195774] [2024-11-13 13:14:01,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:01,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:14:01,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:01,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:14:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:14:01,827 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:14:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:01,901 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-11-13 13:14:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:14:01,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-13 13:14:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:01,904 INFO L225 Difference]: With dead ends: 70 [2024-11-13 13:14:01,906 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 13:14:01,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:14:01,907 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:01,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:14:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 13:14:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-13 13:14:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-13 13:14:01,917 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 52 [2024-11-13 13:14:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:01,917 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-13 13:14:01,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:14:01,918 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-13 13:14:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 13:14:01,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:01,919 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:01,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:02,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:02,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:02,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1744062703, now seen corresponding path program 3 times [2024-11-13 13:14:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221878994] [2024-11-13 13:14:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:02,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:14:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:02,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:14:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:02,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 13:14:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 13:14:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221878994] [2024-11-13 13:14:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221878994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965592077] [2024-11-13 13:14:02,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:14:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:02,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:02,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:02,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:14:02,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:14:02,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:02,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:14:02,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 13:14:02,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 13:14:02,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965592077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:02,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:02,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-13 13:14:02,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588289166] [2024-11-13 13:14:02,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:02,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:14:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:14:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:14:02,625 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:02,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:02,674 INFO L93 Difference]: Finished difference Result 89 states and 118 transitions. [2024-11-13 13:14:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:14:02,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-11-13 13:14:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:02,676 INFO L225 Difference]: With dead ends: 89 [2024-11-13 13:14:02,677 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 13:14:02,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:14:02,678 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:02,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:14:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 13:14:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-13 13:14:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2024-11-13 13:14:02,688 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 59 [2024-11-13 13:14:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:02,689 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2024-11-13 13:14:02,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2024-11-13 13:14:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 13:14:02,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:02,691 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:02,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:14:02,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:14:02,895 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:02,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2064960913, now seen corresponding path program 4 times [2024-11-13 13:14:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404524685] [2024-11-13 13:14:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:03,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:14:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:03,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:14:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:03,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 13:14:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-13 13:14:03,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:03,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404524685] [2024-11-13 13:14:03,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404524685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:03,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146241923] [2024-11-13 13:14:03,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:14:03,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:03,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:03,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:03,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:14:03,683 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:14:03,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:03,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:14:03,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-13 13:14:03,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 13:14:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146241923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:04,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-13 13:14:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038374409] [2024-11-13 13:14:04,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:04,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 13:14:04,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 13:14:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:14:04,131 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:04,281 INFO L93 Difference]: Finished difference Result 152 states and 211 transitions. [2024-11-13 13:14:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:14:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 95 [2024-11-13 13:14:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:04,286 INFO L225 Difference]: With dead ends: 152 [2024-11-13 13:14:04,286 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 13:14:04,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:14:04,291 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 132 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:04,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 296 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:14:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 13:14:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-13 13:14:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.316326530612245) internal successors, (129), 98 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:04,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2024-11-13 13:14:04,316 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 95 [2024-11-13 13:14:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:04,319 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2024-11-13 13:14:04,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2024-11-13 13:14:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-13 13:14:04,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:04,327 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:04,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:14:04,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 13:14:04,528 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:04,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash 197107634, now seen corresponding path program 5 times [2024-11-13 13:14:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185535559] [2024-11-13 13:14:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:05,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:14:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:05,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 13:14:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:05,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-13 13:14:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2727 trivial. 0 not checked. [2024-11-13 13:14:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185535559] [2024-11-13 13:14:05,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185535559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489210947] [2024-11-13 13:14:05,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:14:05,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:05,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:05,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:14:05,730 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-13 13:14:05,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:05,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:14:05,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2024-11-13 13:14:06,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2024-11-13 13:14:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489210947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:06,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:06,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-13 13:14:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453301758] [2024-11-13 13:14:06,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:06,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 13:14:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 13:14:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:14:06,892 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 44 states, 44 states have (on average 2.9318181818181817) internal successors, (129), 44 states have internal predecessors, (129), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:07,130 INFO L93 Difference]: Finished difference Result 273 states and 388 transitions. [2024-11-13 13:14:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 13:14:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.9318181818181817) internal successors, (129), 44 states have internal predecessors, (129), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 168 [2024-11-13 13:14:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:07,135 INFO L225 Difference]: With dead ends: 273 [2024-11-13 13:14:07,135 INFO L226 Difference]: Without dead ends: 184 [2024-11-13 13:14:07,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:14:07,142 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 304 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:07,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 364 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:14:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-13 13:14:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-13 13:14:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.3519553072625698) internal successors, (242), 179 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 248 transitions. [2024-11-13 13:14:07,177 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 248 transitions. Word has length 168 [2024-11-13 13:14:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:07,179 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 248 transitions. [2024-11-13 13:14:07,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.9318181818181817) internal successors, (129), 44 states have internal predecessors, (129), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 248 transitions. [2024-11-13 13:14:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-13 13:14:07,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:07,190 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 12, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:07,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:07,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 13:14:07,395 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:07,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash -638486351, now seen corresponding path program 6 times [2024-11-13 13:14:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509120750] [2024-11-13 13:14:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:08,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:14:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:08,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-13 13:14:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:08,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-11-13 13:14:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12381 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 12303 trivial. 0 not checked. [2024-11-13 13:14:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509120750] [2024-11-13 13:14:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509120750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816147092] [2024-11-13 13:14:08,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:14:08,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:08,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:08,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:08,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:14:08,427 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 13:14:08,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:08,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:14:08,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12381 backedges. 5530 proven. 3 refuted. 0 times theorem prover too weak. 6848 trivial. 0 not checked. [2024-11-13 13:14:08,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12381 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12378 trivial. 0 not checked. [2024-11-13 13:14:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816147092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:08,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-13 13:14:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354872237] [2024-11-13 13:14:08,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:08,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:14:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:14:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:14:08,654 INFO L87 Difference]: Start difference. First operand 184 states and 248 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:08,737 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2024-11-13 13:14:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:14:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 313 [2024-11-13 13:14:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:08,740 INFO L225 Difference]: With dead ends: 358 [2024-11-13 13:14:08,742 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 13:14:08,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:14:08,744 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:08,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:14:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 13:14:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-13 13:14:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.3423913043478262) internal successors, (247), 184 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 253 transitions. [2024-11-13 13:14:08,776 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 253 transitions. Word has length 313 [2024-11-13 13:14:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:08,776 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 253 transitions. [2024-11-13 13:14:08,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 253 transitions. [2024-11-13 13:14:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-13 13:14:08,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:08,783 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 13, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:08,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:14:08,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:08,984 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:08,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash 576503634, now seen corresponding path program 7 times [2024-11-13 13:14:08,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:08,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276557519] [2024-11-13 13:14:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:08,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:09,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 13:14:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:09,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-13 13:14:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:09,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-11-13 13:14:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12412 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276557519] [2024-11-13 13:14:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276557519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528490764] [2024-11-13 13:14:09,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:14:09,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:09,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:09,920 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:09,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:14:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:10,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:14:10,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12412 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:10,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12412 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:10,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528490764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:10,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:10,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-13 13:14:10,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144751803] [2024-11-13 13:14:10,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:10,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 13:14:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:10,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 13:14:10,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:14:10,878 INFO L87 Difference]: Start difference. First operand 189 states and 253 transitions. Second operand has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:14:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:10,940 INFO L93 Difference]: Finished difference Result 377 states and 519 transitions. [2024-11-13 13:14:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 13:14:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 318 [2024-11-13 13:14:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:10,943 INFO L225 Difference]: With dead ends: 377 [2024-11-13 13:14:10,944 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 13:14:10,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:14:10,947 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:10,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:14:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 13:14:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-13 13:14:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3165829145728642) internal successors, (262), 199 states have internal predecessors, (262), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 268 transitions. [2024-11-13 13:14:10,973 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 268 transitions. Word has length 318 [2024-11-13 13:14:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:10,974 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 268 transitions. [2024-11-13 13:14:10,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:14:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 268 transitions. [2024-11-13 13:14:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-13 13:14:10,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:10,980 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 28, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:11,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:14:11,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:11,184 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:11,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash 670689777, now seen corresponding path program 8 times [2024-11-13 13:14:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67466241] [2024-11-13 13:14:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:12,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:14:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:12,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-13 13:14:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:12,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-11-13 13:14:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12727 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:12,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:12,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67466241] [2024-11-13 13:14:12,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67466241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136529840] [2024-11-13 13:14:12,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:14:12,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:12,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:12,903 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:12,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:14:13,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:14:13,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:13,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:14:13,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12727 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:13,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12727 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136529840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:15,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:15,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-13 13:14:15,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414207699] [2024-11-13 13:14:15,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:15,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 13:14:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 13:14:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 13:14:15,093 INFO L87 Difference]: Start difference. First operand 204 states and 268 transitions. Second operand has 61 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:14:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:15,218 INFO L93 Difference]: Finished difference Result 407 states and 564 transitions. [2024-11-13 13:14:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 13:14:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 333 [2024-11-13 13:14:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:15,221 INFO L225 Difference]: With dead ends: 407 [2024-11-13 13:14:15,221 INFO L226 Difference]: Without dead ends: 234 [2024-11-13 13:14:15,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 13:14:15,226 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:15,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:14:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-13 13:14:15,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-11-13 13:14:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.275109170305677) internal successors, (292), 229 states have internal predecessors, (292), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 298 transitions. [2024-11-13 13:14:15,246 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 298 transitions. Word has length 333 [2024-11-13 13:14:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:15,247 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 298 transitions. [2024-11-13 13:14:15,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:14:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 298 transitions. [2024-11-13 13:14:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-13 13:14:15,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:15,259 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 58, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:15,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:14:15,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:15,463 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:15,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash -553101359, now seen corresponding path program 9 times [2024-11-13 13:14:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:15,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937496098] [2024-11-13 13:14:15,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:15,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:19,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-13 13:14:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:19,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-13 13:14:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:19,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-11-13 13:14:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14032 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 13:14:19,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937496098] [2024-11-13 13:14:19,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937496098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117933646] [2024-11-13 13:14:19,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:14:19,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:19,833 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:19,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:14:20,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 13:14:20,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:20,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:14:20,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14032 backedges. 5530 proven. 21 refuted. 0 times theorem prover too weak. 8481 trivial. 0 not checked. [2024-11-13 13:14:20,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14032 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 14011 trivial. 0 not checked. [2024-11-13 13:14:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117933646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:20,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:20,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 9, 9] total 75 [2024-11-13 13:14:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377991361] [2024-11-13 13:14:20,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:20,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-13 13:14:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-13 13:14:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 13:14:20,950 INFO L87 Difference]: Start difference. First operand 234 states and 298 transitions. Second operand has 75 states, 75 states have (on average 1.4) internal successors, (105), 75 states have internal predecessors, (105), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:21,281 INFO L93 Difference]: Finished difference Result 416 states and 552 transitions. [2024-11-13 13:14:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-13 13:14:21,282 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.4) internal successors, (105), 75 states have internal predecessors, (105), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 363 [2024-11-13 13:14:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:21,284 INFO L225 Difference]: With dead ends: 416 [2024-11-13 13:14:21,284 INFO L226 Difference]: Without dead ends: 243 [2024-11-13 13:14:21,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 13:14:21,287 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:21,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:14:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-13 13:14:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-13 13:14:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 238 states have (on average 1.2647058823529411) internal successors, (301), 238 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 307 transitions. [2024-11-13 13:14:21,302 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 307 transitions. Word has length 363 [2024-11-13 13:14:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:21,302 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 307 transitions. [2024-11-13 13:14:21,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.4) internal successors, (105), 75 states have internal predecessors, (105), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 307 transitions. [2024-11-13 13:14:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-13 13:14:21,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:21,312 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 59, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:21,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:14:21,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:21,512 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:21,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash 283188210, now seen corresponding path program 10 times [2024-11-13 13:14:21,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:21,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137563325] [2024-11-13 13:14:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:25,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-13 13:14:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:25,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-13 13:14:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:25,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-11-13 13:14:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14175 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 12405 trivial. 0 not checked. [2024-11-13 13:14:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137563325] [2024-11-13 13:14:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137563325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403213024] [2024-11-13 13:14:25,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:14:25,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:25,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:25,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:14:25,776 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:14:25,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:25,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 13:14:25,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14175 backedges. 5524 proven. 1335 refuted. 0 times theorem prover too weak. 7316 trivial. 0 not checked. [2024-11-13 13:14:27,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14175 backedges. 0 proven. 6863 refuted. 0 times theorem prover too weak. 7312 trivial. 0 not checked. [2024-11-13 13:14:29,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403213024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:29,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:29,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 33, 33] total 124 [2024-11-13 13:14:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928922925] [2024-11-13 13:14:29,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:29,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-13 13:14:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-13 13:14:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 13:14:29,685 INFO L87 Difference]: Start difference. First operand 243 states and 307 transitions. Second operand has 124 states, 124 states have (on average 2.2016129032258065) internal successors, (273), 124 states have internal predecessors, (273), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:30,483 INFO L93 Difference]: Finished difference Result 585 states and 812 transitions. [2024-11-13 13:14:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-13 13:14:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.2016129032258065) internal successors, (273), 124 states have internal predecessors, (273), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 372 [2024-11-13 13:14:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:30,487 INFO L225 Difference]: With dead ends: 585 [2024-11-13 13:14:30,487 INFO L226 Difference]: Without dead ends: 404 [2024-11-13 13:14:30,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 13:14:30,493 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 948 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:30,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 536 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:14:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-13 13:14:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2024-11-13 13:14:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.318295739348371) internal successors, (526), 399 states have internal predecessors, (526), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 13:14:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 532 transitions. [2024-11-13 13:14:30,510 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 532 transitions. Word has length 372 [2024-11-13 13:14:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:30,511 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 532 transitions. [2024-11-13 13:14:30,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.2016129032258065) internal successors, (273), 124 states have internal predecessors, (273), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:14:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 532 transitions. [2024-11-13 13:14:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2024-11-13 13:14:30,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:30,529 INFO L215 NwaCegarLoop]: trace histogram [186, 186, 186, 60, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:30,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:14:30,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:30,733 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:30,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1405378447, now seen corresponding path program 11 times [2024-11-13 13:14:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201373339] [2024-11-13 13:14:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:34,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 13:14:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:35,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-11-13 13:14:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:35,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2024-11-13 13:14:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 54123 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 52293 trivial. 0 not checked. [2024-11-13 13:14:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201373339] [2024-11-13 13:14:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201373339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000535659] [2024-11-13 13:14:35,097 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:14:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:35,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:35,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:35,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c81c3f-fc98-4628-8a50-39f48ccb371d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process