./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI --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 fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:58,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:58,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:53:58,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:58,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:58,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:58,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:58,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:58,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:58,590 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:58,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:58,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:58,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:58,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:58,593 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:58,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:58,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:53:58,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:58,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:58,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:58,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:58,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:53:58,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:58,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:53:58,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:58,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:53:58,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:58,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:58,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:58,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:58,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:58,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:58,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:58,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:58,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:53:58,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:58,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:58,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:58,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:58,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:53:58,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:58,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:58,603 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 [2023-11-24 21:53:58,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:58,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:58,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:58,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:58,934 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:58,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/array-multidimensional/rev-3-u.c [2023-11-24 21:54:02,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:54:02,308 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:54:02,309 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/sv-benchmarks/c/array-multidimensional/rev-3-u.c [2023-11-24 21:54:02,316 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/data/23d8b8ba4/5012ba2ce35346bcbf1f621f153081b9/FLAG6dba2e9e8 [2023-11-24 21:54:02,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/data/23d8b8ba4/5012ba2ce35346bcbf1f621f153081b9 [2023-11-24 21:54:02,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:54:02,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:54:02,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:02,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:54:02,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:54:02,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ed19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02, skipping insertion in model container [2023-11-24 21:54:02,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,399 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:54:02,559 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/sv-benchmarks/c/array-multidimensional/rev-3-u.c[319,332] [2023-11-24 21:54:02,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:02,604 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:54:02,616 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/sv-benchmarks/c/array-multidimensional/rev-3-u.c[319,332] [2023-11-24 21:54:02,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:02,648 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:54:02,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02 WrapperNode [2023-11-24 21:54:02,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:02,649 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:54:02,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:54:02,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:54:02,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,683 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-11-24 21:54:02,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:54:02,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:54:02,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:54:02,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:54:02,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,712 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 21:54:02,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,728 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:54:02,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:54:02,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:54:02,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:54:02,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (1/1) ... [2023-11-24 21:54:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:02,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:54:02,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:54:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:54:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:54:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:54:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:54:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:54:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:54:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:54:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:54:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:54:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:54:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:54:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:54:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:54:02,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:54:02,879 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:54:02,881 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:54:03,063 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:54:03,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:54:03,096 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-24 21:54:03,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:03 BoogieIcfgContainer [2023-11-24 21:54:03,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:54:03,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:54:03,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:54:03,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:54:03,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:54:02" (1/3) ... [2023-11-24 21:54:03,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30971a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:54:03, skipping insertion in model container [2023-11-24 21:54:03,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:02" (2/3) ... [2023-11-24 21:54:03,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30971a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:54:03, skipping insertion in model container [2023-11-24 21:54:03,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:03" (3/3) ... [2023-11-24 21:54:03,107 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-3-u.c [2023-11-24 21:54:03,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:54:03,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:54:03,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:54:03,183 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4aaed608, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:54:03,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:54:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 21:54:03,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:03,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:03,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:03,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,199 INFO L85 PathProgramCache]: Analyzing trace with hash 237570459, now seen corresponding path program 1 times [2023-11-24 21:54:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:03,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847135127] [2023-11-24 21:54:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:03,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:03,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741156354] [2023-11-24 21:54:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:03,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:03,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:03,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:54:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:03,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 21:54:03,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:03,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:03,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:03,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847135127] [2023-11-24 21:54:03,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:03,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741156354] [2023-11-24 21:54:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741156354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:03,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:03,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:03,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935260751] [2023-11-24 21:54:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:03,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:54:03,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:54:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:54:03,585 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:03,617 INFO L93 Difference]: Finished difference Result 47 states and 83 transitions. [2023-11-24 21:54:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:54:03,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 21:54:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:03,628 INFO L225 Difference]: With dead ends: 47 [2023-11-24 21:54:03,628 INFO L226 Difference]: Without dead ends: 22 [2023-11-24 21:54:03,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:54:03,635 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:03,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-24 21:54:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-24 21:54:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-24 21:54:03,676 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2023-11-24 21:54:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:03,677 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-24 21:54:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-24 21:54:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 21:54:03,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:03,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:03,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:03,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 21:54:03,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:03,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1373370499, now seen corresponding path program 1 times [2023-11-24 21:54:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:03,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501375842] [2023-11-24 21:54:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:03,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:03,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627541286] [2023-11-24 21:54:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:03,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:03,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:03,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:54:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:04,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:04,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501375842] [2023-11-24 21:54:04,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:04,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627541286] [2023-11-24 21:54:04,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627541286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33746355] [2023-11-24 21:54:04,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:04,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:04,095 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:04,182 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2023-11-24 21:54:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:04,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 21:54:04,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:04,184 INFO L225 Difference]: With dead ends: 43 [2023-11-24 21:54:04,185 INFO L226 Difference]: Without dead ends: 27 [2023-11-24 21:54:04,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:04,189 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:04,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-24 21:54:04,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-11-24 21:54:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-11-24 21:54:04,209 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2023-11-24 21:54:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:04,210 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-11-24 21:54:04,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-11-24 21:54:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 21:54:04,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:04,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:04,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:04,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:04,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:04,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:04,423 INFO L85 PathProgramCache]: Analyzing trace with hash 84443277, now seen corresponding path program 1 times [2023-11-24 21:54:04,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:04,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997622058] [2023-11-24 21:54:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:04,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:04,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395683677] [2023-11-24 21:54:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:04,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:04,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:54:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:04,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:04,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:04,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997622058] [2023-11-24 21:54:04,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:04,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395683677] [2023-11-24 21:54:04,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395683677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607347123] [2023-11-24 21:54:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:04,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:04,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:04,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:04,568 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:04,649 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2023-11-24 21:54:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-24 21:54:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:04,651 INFO L225 Difference]: With dead ends: 60 [2023-11-24 21:54:04,652 INFO L226 Difference]: Without dead ends: 39 [2023-11-24 21:54:04,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:04,654 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:04,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 16 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:04,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-24 21:54:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2023-11-24 21:54:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2023-11-24 21:54:04,663 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2023-11-24 21:54:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:04,663 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2023-11-24 21:54:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2023-11-24 21:54:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:54:04,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:04,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:04,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:04,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:04,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:04,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash -426887717, now seen corresponding path program 1 times [2023-11-24 21:54:04,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:04,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434247361] [2023-11-24 21:54:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:04,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267450488] [2023-11-24 21:54:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:04,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:04,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:04,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:54:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:04,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:04,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434247361] [2023-11-24 21:54:04,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267450488] [2023-11-24 21:54:04,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267450488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967271861] [2023-11-24 21:54:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:04,994 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:05,080 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2023-11-24 21:54:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 21:54:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:05,081 INFO L225 Difference]: With dead ends: 60 [2023-11-24 21:54:05,081 INFO L226 Difference]: Without dead ends: 36 [2023-11-24 21:54:05,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:05,083 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:05,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 20 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-24 21:54:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-11-24 21:54:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2023-11-24 21:54:05,091 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2023-11-24 21:54:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:05,091 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-11-24 21:54:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2023-11-24 21:54:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:54:05,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:05,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:05,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:05,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:05,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash 704489342, now seen corresponding path program 1 times [2023-11-24 21:54:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60257549] [2023-11-24 21:54:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:05,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940619689] [2023-11-24 21:54:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:05,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:05,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:05,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:05,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:54:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:05,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:05,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:05,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:05,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:05,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60257549] [2023-11-24 21:54:05,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940619689] [2023-11-24 21:54:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940619689] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:05,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:54:05,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-24 21:54:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229432788] [2023-11-24 21:54:05,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:05,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:54:05,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:05,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:54:05,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:54:05,485 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:05,604 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2023-11-24 21:54:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:54:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 21:54:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:05,606 INFO L225 Difference]: With dead ends: 80 [2023-11-24 21:54:05,606 INFO L226 Difference]: Without dead ends: 53 [2023-11-24 21:54:05,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:54:05,607 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:05,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 38 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-24 21:54:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2023-11-24 21:54:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-24 21:54:05,618 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2023-11-24 21:54:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:05,619 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-24 21:54:05,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-24 21:54:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:54:05,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:05,620 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:05,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:05,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:05,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:05,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -5306725, now seen corresponding path program 2 times [2023-11-24 21:54:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:05,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905651651] [2023-11-24 21:54:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:05,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:05,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860794962] [2023-11-24 21:54:05,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:54:05,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:05,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:05,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:05,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 21:54:06,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:54:06,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:06,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:06,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 21:54:06,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905651651] [2023-11-24 21:54:06,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860794962] [2023-11-24 21:54:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860794962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:06,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:06,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625208966] [2023-11-24 21:54:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:06,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:06,046 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:06,118 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2023-11-24 21:54:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 21:54:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:06,121 INFO L225 Difference]: With dead ends: 104 [2023-11-24 21:54:06,121 INFO L226 Difference]: Without dead ends: 83 [2023-11-24 21:54:06,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:06,122 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:06,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 16 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-24 21:54:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 45. [2023-11-24 21:54:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-11-24 21:54:06,136 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2023-11-24 21:54:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:06,136 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-11-24 21:54:06,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-11-24 21:54:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 21:54:06,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:06,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:06,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:06,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:06,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:06,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -364596391, now seen corresponding path program 1 times [2023-11-24 21:54:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358256926] [2023-11-24 21:54:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:06,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735075651] [2023-11-24 21:54:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:06,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:06,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:06,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:06,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 21:54:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:06,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:54:06,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 21:54:06,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 21:54:06,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:06,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358256926] [2023-11-24 21:54:06,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:06,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735075651] [2023-11-24 21:54:06,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735075651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:06,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:54:06,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-24 21:54:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223423908] [2023-11-24 21:54:06,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:54:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:54:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:54:06,634 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:06,893 INFO L93 Difference]: Finished difference Result 137 states and 174 transitions. [2023-11-24 21:54:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:54:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-24 21:54:06,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:06,894 INFO L225 Difference]: With dead ends: 137 [2023-11-24 21:54:06,894 INFO L226 Difference]: Without dead ends: 94 [2023-11-24 21:54:06,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-11-24 21:54:06,896 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 189 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:06,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 50 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:54:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-24 21:54:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2023-11-24 21:54:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 74 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2023-11-24 21:54:06,920 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 30 [2023-11-24 21:54:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:06,920 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2023-11-24 21:54:06,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2023-11-24 21:54:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 21:54:06,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:06,924 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:06,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:07,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:07,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:07,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2131532679, now seen corresponding path program 2 times [2023-11-24 21:54:07,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:07,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069417026] [2023-11-24 21:54:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:07,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:07,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645614905] [2023-11-24 21:54:07,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:54:07,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:07,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:07,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:07,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 21:54:07,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:54:07,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:07,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:54:07,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 21:54:07,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 21:54:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069417026] [2023-11-24 21:54:07,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645614905] [2023-11-24 21:54:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645614905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:07,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:54:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-24 21:54:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364507029] [2023-11-24 21:54:07,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-24 21:54:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-24 21:54:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-11-24 21:54:07,769 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:08,435 INFO L93 Difference]: Finished difference Result 251 states and 312 transitions. [2023-11-24 21:54:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-24 21:54:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-11-24 21:54:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:08,440 INFO L225 Difference]: With dead ends: 251 [2023-11-24 21:54:08,440 INFO L226 Difference]: Without dead ends: 178 [2023-11-24 21:54:08,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-11-24 21:54:08,444 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 434 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:08,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 98 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:54:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-24 21:54:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 135. [2023-11-24 21:54:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.2238805970149254) internal successors, (164), 134 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 164 transitions. [2023-11-24 21:54:08,490 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 164 transitions. Word has length 42 [2023-11-24 21:54:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:08,491 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 164 transitions. [2023-11-24 21:54:08,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 164 transitions. [2023-11-24 21:54:08,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 21:54:08,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:08,498 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:08,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:08,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:08,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:08,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash -146886983, now seen corresponding path program 3 times [2023-11-24 21:54:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:08,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293729747] [2023-11-24 21:54:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:08,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990718974] [2023-11-24 21:54:08,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:54:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:08,749 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:08,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 21:54:08,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 21:54:08,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:08,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:08,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-11-24 21:54:09,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-11-24 21:54:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293729747] [2023-11-24 21:54:09,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990718974] [2023-11-24 21:54:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990718974] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:09,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:54:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-24 21:54:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259825182] [2023-11-24 21:54:09,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:54:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:54:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:54:09,190 INFO L87 Difference]: Start difference. First operand 135 states and 164 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:09,421 INFO L93 Difference]: Finished difference Result 631 states and 773 transitions. [2023-11-24 21:54:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:54:09,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-24 21:54:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:09,425 INFO L225 Difference]: With dead ends: 631 [2023-11-24 21:54:09,425 INFO L226 Difference]: Without dead ends: 526 [2023-11-24 21:54:09,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:54:09,427 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 193 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:09,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 30 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-24 21:54:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 303. [2023-11-24 21:54:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.1390728476821192) internal successors, (344), 302 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 344 transitions. [2023-11-24 21:54:09,503 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 344 transitions. Word has length 66 [2023-11-24 21:54:09,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:09,503 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 344 transitions. [2023-11-24 21:54:09,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 344 transitions. [2023-11-24 21:54:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-24 21:54:09,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:09,509 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:09,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-24 21:54:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 21:54:09,714 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:09,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash 696093805, now seen corresponding path program 4 times [2023-11-24 21:54:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:09,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128179732] [2023-11-24 21:54:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:09,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:09,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32085451] [2023-11-24 21:54:09,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 21:54:09,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:09,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:09,871 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:09,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 21:54:10,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 21:54:10,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:10,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:54:10,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8472 backedges. 196 proven. 1603 refuted. 0 times theorem prover too weak. 6673 trivial. 0 not checked. [2023-11-24 21:54:10,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8472 backedges. 196 proven. 1603 refuted. 0 times theorem prover too weak. 6673 trivial. 0 not checked. [2023-11-24 21:54:10,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:10,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128179732] [2023-11-24 21:54:10,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:54:10,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32085451] [2023-11-24 21:54:10,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32085451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:10,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:54:10,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-24 21:54:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263631992] [2023-11-24 21:54:10,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:10,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:54:10,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:54:10,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:54:10,789 INFO L87 Difference]: Start difference. First operand 303 states and 344 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:11,194 INFO L93 Difference]: Finished difference Result 1159 states and 1310 transitions. [2023-11-24 21:54:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:54:11,195 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-11-24 21:54:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:11,200 INFO L225 Difference]: With dead ends: 1159 [2023-11-24 21:54:11,200 INFO L226 Difference]: Without dead ends: 848 [2023-11-24 21:54:11,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:54:11,203 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:11,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 53 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-11-24 21:54:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 580. [2023-11-24 21:54:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.1295336787564767) internal successors, (654), 579 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 654 transitions. [2023-11-24 21:54:11,384 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 654 transitions. Word has length 234 [2023-11-24 21:54:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:11,385 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 654 transitions. [2023-11-24 21:54:11,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 654 transitions. [2023-11-24 21:54:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-24 21:54:11,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:11,396 INFO L195 NwaCegarLoop]: trace histogram [176, 154, 8, 8, 8, 7, 7, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:11,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:11,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 21:54:11,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:11,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:11,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1353302364, now seen corresponding path program 5 times [2023-11-24 21:54:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773545967] [2023-11-24 21:54:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:11,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:11,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:54:11,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98834269] [2023-11-24 21:54:11,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-24 21:54:11,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:11,838 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:11,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20314a27-9dbd-4636-92e6-8176e1efd433/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process