./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array13_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array13_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB --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 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:24:40,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:24:40,734 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:24:40,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:24:40,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:24:40,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:24:40,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:24:40,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:24:40,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:24:40,769 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:24:40,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:24:40,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:24:40,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:24:40,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:24:40,770 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:24:40,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:24:40,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:24:40,771 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:24:40,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:24:40,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:24:40,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:24:40,772 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:40,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:40,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:40,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:24:40,774 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e [2024-11-27 20:24:41,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:24:41,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:24:41,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:24:41,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:24:41,114 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:24:41,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-patterns/array13_pattern.c [2024-11-27 20:24:44,177 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/data/824440773/ef8eae12222d4af1978f2f6e16880977/FLAG29dd099ff [2024-11-27 20:24:44,503 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:24:44,504 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/sv-benchmarks/c/array-patterns/array13_pattern.c [2024-11-27 20:24:44,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/data/824440773/ef8eae12222d4af1978f2f6e16880977/FLAG29dd099ff [2024-11-27 20:24:44,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/data/824440773/ef8eae12222d4af1978f2f6e16880977 [2024-11-27 20:24:44,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:24:44,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:24:44,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:44,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:24:44,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:24:44,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2e5013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44, skipping insertion in model container [2024-11-27 20:24:44,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:24:44,717 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/sv-benchmarks/c/array-patterns/array13_pattern.c[1342,1355] [2024-11-27 20:24:44,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:44,752 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:24:44,765 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/sv-benchmarks/c/array-patterns/array13_pattern.c[1342,1355] [2024-11-27 20:24:44,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:44,811 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:24:44,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44 WrapperNode [2024-11-27 20:24:44,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:44,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:44,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:24:44,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:24:44,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,852 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-11-27 20:24:44,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:44,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:24:44,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:24:44,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:24:44,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,884 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-27 20:24:44,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,898 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:24:44,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:24:44,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:24:44,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:24:44,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:44,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:24:44,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:24:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:24:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:24:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:24:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:24:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:24:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:24:45,089 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:24:45,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:24:45,282 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-27 20:24:45,282 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:24:45,293 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:24:45,294 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 20:24:45,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:45 BoogieIcfgContainer [2024-11-27 20:24:45,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:24:45,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:24:45,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:24:45,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:24:45,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:24:44" (1/3) ... [2024-11-27 20:24:45,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b56fd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:45, skipping insertion in model container [2024-11-27 20:24:45,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (2/3) ... [2024-11-27 20:24:45,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b56fd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:45, skipping insertion in model container [2024-11-27 20:24:45,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:45" (3/3) ... [2024-11-27 20:24:45,306 INFO L128 eAbstractionObserver]: Analyzing ICFG array13_pattern.c [2024-11-27 20:24:45,324 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:24:45,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array13_pattern.c that has 2 procedures, 33 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-27 20:24:45,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:24:45,418 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17bacb37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:24:45,418 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:24:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:24:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 20:24:45,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:45,435 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:45,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:45,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:45,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1293951905, now seen corresponding path program 1 times [2024-11-27 20:24:45,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:45,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235941810] [2024-11-27 20:24:45,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:45,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:45,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235941810] [2024-11-27 20:24:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235941810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:45,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:45,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:24:45,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23891834] [2024-11-27 20:24:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:45,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:24:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:45,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:24:45,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:24:45,635 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 20:24:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:45,654 INFO L93 Difference]: Finished difference Result 63 states and 95 transitions. [2024-11-27 20:24:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:24:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-27 20:24:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:45,663 INFO L225 Difference]: With dead ends: 63 [2024-11-27 20:24:45,663 INFO L226 Difference]: Without dead ends: 29 [2024-11-27 20:24:45,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:24:45,670 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:45,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:24:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-27 20:24:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-27 20:24:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:24:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-27 20:24:45,710 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 15 [2024-11-27 20:24:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:45,710 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-27 20:24:45,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 20:24:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-27 20:24:45,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 20:24:45,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:45,713 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:45,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:24:45,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:45,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1944172108, now seen corresponding path program 1 times [2024-11-27 20:24:45,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:45,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346617710] [2024-11-27 20:24:45,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:24:46,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346617710] [2024-11-27 20:24:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346617710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879162952] [2024-11-27 20:24:46,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:46,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:46,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:46,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:46,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:24:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:46,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:24:46,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:46,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:24:46,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879162952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:46,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:24:46,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-27 20:24:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609894047] [2024-11-27 20:24:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:46,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:46,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:46,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:46,631 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:24:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:46,797 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2024-11-27 20:24:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:24:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-27 20:24:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:46,799 INFO L225 Difference]: With dead ends: 69 [2024-11-27 20:24:46,799 INFO L226 Difference]: Without dead ends: 43 [2024-11-27 20:24:46,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:46,800 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:46,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:24:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-27 20:24:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2024-11-27 20:24:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:24:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-27 20:24:46,813 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 28 [2024-11-27 20:24:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:46,814 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-27 20:24:46,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:24:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-27 20:24:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-27 20:24:46,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:46,816 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:46,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:24:47,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:47,020 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:47,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash 693379390, now seen corresponding path program 1 times [2024-11-27 20:24:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:47,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190585109] [2024-11-27 20:24:47,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:24:47,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:47,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190585109] [2024-11-27 20:24:47,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190585109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:47,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:47,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:24:47,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650649161] [2024-11-27 20:24:47,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:47,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:24:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:47,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:24:47,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:47,238 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:24:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:47,348 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-11-27 20:24:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:24:47,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-27 20:24:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:47,350 INFO L225 Difference]: With dead ends: 68 [2024-11-27 20:24:47,350 INFO L226 Difference]: Without dead ends: 43 [2024-11-27 20:24:47,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:47,351 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:47,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:24:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-27 20:24:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-27 20:24:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:24:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-27 20:24:47,358 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 32 [2024-11-27 20:24:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:47,358 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-27 20:24:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:24:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-27 20:24:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-27 20:24:47,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:47,359 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:47,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:24:47,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:47,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 624205442, now seen corresponding path program 1 times [2024-11-27 20:24:47,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:47,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034333489] [2024-11-27 20:24:47,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:47,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:24:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034333489] [2024-11-27 20:24:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034333489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024474093] [2024-11-27 20:24:47,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:47,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:47,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:47,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:24:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:47,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:24:47,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:24:47,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:24:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024474093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:47,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:47,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-27 20:24:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560938621] [2024-11-27 20:24:47,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:47,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:24:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:47,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:24:47,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:24:47,854 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:24:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:48,015 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-27 20:24:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:24:48,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-11-27 20:24:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:48,017 INFO L225 Difference]: With dead ends: 49 [2024-11-27 20:24:48,017 INFO L226 Difference]: Without dead ends: 45 [2024-11-27 20:24:48,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:48,018 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:48,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 86 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:24:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-27 20:24:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2024-11-27 20:24:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:24:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-27 20:24:48,034 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 34 [2024-11-27 20:24:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:48,035 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-27 20:24:48,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:24:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-27 20:24:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 20:24:48,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:48,037 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:48,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:24:48,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:48,241 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:48,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -855990800, now seen corresponding path program 1 times [2024-11-27 20:24:48,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:48,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194806381] [2024-11-27 20:24:48,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:48,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:24:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194806381] [2024-11-27 20:24:48,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194806381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847611515] [2024-11-27 20:24:48,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:48,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:48,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:48,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:48,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:24:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:48,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:24:48,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:49,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:24:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847611515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:49,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:49,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 21 [2024-11-27 20:24:49,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822314226] [2024-11-27 20:24:49,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:49,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:24:49,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:49,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:24:49,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:24:49,447 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 21 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 20:24:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:50,416 INFO L93 Difference]: Finished difference Result 180 states and 222 transitions. [2024-11-27 20:24:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 20:24:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 40 [2024-11-27 20:24:50,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:50,421 INFO L225 Difference]: With dead ends: 180 [2024-11-27 20:24:50,421 INFO L226 Difference]: Without dead ends: 152 [2024-11-27 20:24:50,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 20:24:50,424 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 244 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:50,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 286 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:24:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-27 20:24:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 83. [2024-11-27 20:24:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 73 states have internal predecessors, (91), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 20:24:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2024-11-27 20:24:50,466 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 40 [2024-11-27 20:24:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:50,469 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2024-11-27 20:24:50,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 20:24:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2024-11-27 20:24:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 20:24:50,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:50,471 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:50,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:24:50,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:50,673 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:50,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1867108050, now seen corresponding path program 1 times [2024-11-27 20:24:50,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:50,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003128521] [2024-11-27 20:24:50,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:24:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985442215] [2024-11-27 20:24:50,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:50,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:50,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:50,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:50,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:24:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:50,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:24:50,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:50,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:24:51,432 INFO L349 Elim1Store]: treesize reduction 24, result has 50.0 percent of original size [2024-11-27 20:24:51,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 40 [2024-11-27 20:24:51,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:24:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:24:51,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:52,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2024-11-27 20:24:52,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2024-11-27 20:24:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:24:52,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003128521] [2024-11-27 20:24:52,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:24:52,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985442215] [2024-11-27 20:24:52,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985442215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:52,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:24:52,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2024-11-27 20:24:52,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869104476] [2024-11-27 20:24:52,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:52,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:24:52,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:52,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:24:52,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:24:52,506 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 20:24:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:54,673 INFO L93 Difference]: Finished difference Result 226 states and 279 transitions. [2024-11-27 20:24:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:24:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2024-11-27 20:24:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:54,677 INFO L225 Difference]: With dead ends: 226 [2024-11-27 20:24:54,677 INFO L226 Difference]: Without dead ends: 183 [2024-11-27 20:24:54,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=501, Invalid=2151, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 20:24:54,682 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 209 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:54,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 244 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:24:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-27 20:24:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2024-11-27 20:24:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 120 states have (on average 1.25) internal successors, (150), 122 states have internal predecessors, (150), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:24:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 172 transitions. [2024-11-27 20:24:54,762 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 172 transitions. Word has length 40 [2024-11-27 20:24:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:54,762 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 172 transitions. [2024-11-27 20:24:54,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 20:24:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 172 transitions. [2024-11-27 20:24:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-27 20:24:54,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:54,764 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:54,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:54,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:24:54,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:54,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1254385868, now seen corresponding path program 2 times [2024-11-27 20:24:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645205036] [2024-11-27 20:24:54,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:54,990 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:54,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:24:55,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645205036] [2024-11-27 20:24:55,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645205036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115853882] [2024-11-27 20:24:55,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:55,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:55,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:55,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:24:55,218 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:55,218 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:55,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:24:55,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:24:55,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:24:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115853882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:55,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-27 20:24:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180644827] [2024-11-27 20:24:55,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:55,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:24:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:55,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:24:55,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:24:55,394 INFO L87 Difference]: Start difference. First operand 138 states and 172 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:24:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:55,732 INFO L93 Difference]: Finished difference Result 233 states and 298 transitions. [2024-11-27 20:24:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:24:55,732 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-27 20:24:55,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:55,734 INFO L225 Difference]: With dead ends: 233 [2024-11-27 20:24:55,734 INFO L226 Difference]: Without dead ends: 181 [2024-11-27 20:24:55,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:24:55,739 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:55,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 173 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:24:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-27 20:24:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 153. [2024-11-27 20:24:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 135 states have (on average 1.2518518518518518) internal successors, (169), 137 states have internal predecessors, (169), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:24:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2024-11-27 20:24:55,797 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 42 [2024-11-27 20:24:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:55,798 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2024-11-27 20:24:55,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:24:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2024-11-27 20:24:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:24:55,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:55,803 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:55,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:56,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:24:56,004 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:56,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1819642304, now seen corresponding path program 2 times [2024-11-27 20:24:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165507391] [2024-11-27 20:24:56,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:56,025 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:56,025 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 20:24:56,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165507391] [2024-11-27 20:24:56,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165507391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853188705] [2024-11-27 20:24:56,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:56,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:56,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:56,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:24:56,212 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:56,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:56,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:24:56,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:24:56,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 20:24:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853188705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:56,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:56,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-27 20:24:56,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085096554] [2024-11-27 20:24:56,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:56,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:24:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:56,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:24:56,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:24:56,380 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:24:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:56,566 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2024-11-27 20:24:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:24:56,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2024-11-27 20:24:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:56,568 INFO L225 Difference]: With dead ends: 223 [2024-11-27 20:24:56,568 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 20:24:56,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:24:56,570 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:56,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:24:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 20:24:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2024-11-27 20:24:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 105 states have internal predecessors, (128), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 20:24:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2024-11-27 20:24:56,603 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 48 [2024-11-27 20:24:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:56,603 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2024-11-27 20:24:56,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:24:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2024-11-27 20:24:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 20:24:56,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:56,605 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:56,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:24:56,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:56,806 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:56,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1750867770, now seen corresponding path program 3 times [2024-11-27 20:24:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:56,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82150351] [2024-11-27 20:24:56,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:56,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:56,836 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:24:56,836 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 20:24:57,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:57,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82150351] [2024-11-27 20:24:57,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82150351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:57,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195535344] [2024-11-27 20:24:57,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:57,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:57,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:57,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:57,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:24:57,199 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:24:57,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:57,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:24:57,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 20:24:57,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:57,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195535344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:57,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:57,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 23 [2024-11-27 20:24:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839562742] [2024-11-27 20:24:57,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:57,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:24:57,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:57,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:24:57,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:24:57,704 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand has 23 states, 21 states have (on average 2.761904761904762) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 20:24:58,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:58,108 INFO L93 Difference]: Finished difference Result 166 states and 203 transitions. [2024-11-27 20:24:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 20:24:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.761904761904762) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2024-11-27 20:24:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:58,110 INFO L225 Difference]: With dead ends: 166 [2024-11-27 20:24:58,112 INFO L226 Difference]: Without dead ends: 162 [2024-11-27 20:24:58,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:24:58,114 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 72 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:58,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 130 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:24:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-27 20:24:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123. [2024-11-27 20:24:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 110 states have internal predecessors, (133), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 20:24:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2024-11-27 20:24:58,154 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 50 [2024-11-27 20:24:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:58,155 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2024-11-27 20:24:58,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.761904761904762) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 20:24:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2024-11-27 20:24:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 20:24:58,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:58,157 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:58,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:24:58,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:58,362 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:58,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash 349697386, now seen corresponding path program 3 times [2024-11-27 20:24:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:58,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472192294] [2024-11-27 20:24:58,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:58,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:58,388 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:24:58,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:24:58,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472192294] [2024-11-27 20:24:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472192294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416821479] [2024-11-27 20:24:58,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:58,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:58,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:58,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:58,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:24:58,557 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:24:58,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:58,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:24:58,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:24:58,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:24:58,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416821479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:58,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:58,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-27 20:24:58,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316128408] [2024-11-27 20:24:58,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:58,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:24:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:58,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:24:58,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:24:58,696 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:24:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:59,002 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2024-11-27 20:24:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:24:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-27 20:24:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:59,004 INFO L225 Difference]: With dead ends: 130 [2024-11-27 20:24:59,005 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 20:24:59,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:24:59,009 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 80 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:59,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 104 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:24:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 20:24:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2024-11-27 20:24:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:24:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2024-11-27 20:24:59,023 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 52 [2024-11-27 20:24:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:59,024 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2024-11-27 20:24:59,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:24:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2024-11-27 20:24:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 20:24:59,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:59,026 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:59,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:24:59,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:24:59,227 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:59,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 148983036, now seen corresponding path program 4 times [2024-11-27 20:24:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903076065] [2024-11-27 20:24:59,228 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:59,260 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:59,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:24:59,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288079473] [2024-11-27 20:24:59,262 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:59,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:59,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:59,264 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:59,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:24:59,595 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:59,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:59,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-27 20:24:59,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:59,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:24:59,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 20:25:00,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:25:00,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-27 20:25:00,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2024-11-27 20:25:09,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:25:09,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:25:09,485 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:25:09,745 INFO L349 Elim1Store]: treesize reduction 352, result has 28.6 percent of original size [2024-11-27 20:25:09,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 98 treesize of output 190 [2024-11-27 20:25:11,361 INFO L349 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2024-11-27 20:25:11,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 22 [2024-11-27 20:25:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:25:11,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903076065] [2024-11-27 20:25:14,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:25:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288079473] [2024-11-27 20:25:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288079473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:14,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:25:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2024-11-27 20:25:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124581833] [2024-11-27 20:25:14,143 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:14,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:25:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:14,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:25:14,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=2170, Unknown=1, NotChecked=0, Total=2550 [2024-11-27 20:25:14,146 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 31 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:25:18,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:25:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:20,319 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2024-11-27 20:25:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:25:20,320 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 31 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-11-27 20:25:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:20,322 INFO L225 Difference]: With dead ends: 170 [2024-11-27 20:25:20,322 INFO L226 Difference]: Without dead ends: 128 [2024-11-27 20:25:20,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=472, Invalid=2833, Unknown=1, NotChecked=0, Total=3306 [2024-11-27 20:25:20,324 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 118 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:20,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 222 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 966 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-11-27 20:25:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-27 20:25:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 101. [2024-11-27 20:25:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 92 states have internal predecessors, (107), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:25:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2024-11-27 20:25:20,351 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 60 [2024-11-27 20:25:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:20,352 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2024-11-27 20:25:20,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5) internal successors, (51), 31 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:25:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2024-11-27 20:25:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 20:25:20,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:20,353 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:20,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:20,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:20,554 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:20,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash 14969530, now seen corresponding path program 4 times [2024-11-27 20:25:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:20,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943961666] [2024-11-27 20:25:20,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:20,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:20,583 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:20,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:25:20,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230877691] [2024-11-27 20:25:20,584 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:20,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:20,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:20,587 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:20,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:25:20,873 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:20,873 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:20,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-27 20:25:20,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:20,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:25:21,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:25:21,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-27 20:25:21,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-27 20:25:21,891 INFO L349 Elim1Store]: treesize reduction 144, result has 16.8 percent of original size [2024-11-27 20:25:21,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 56 treesize of output 54 [2024-11-27 20:25:22,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:25:22,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 20 [2024-11-27 20:25:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:25:22,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:25,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 269 [2024-11-27 20:25:26,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:25:26,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188101472 treesize of output 182858632 [2024-11-27 20:25:31,377 WARN L286 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 4788 DAG size of output: 253 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:26:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:26:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943961666] [2024-11-27 20:26:33,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:26:33,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230877691] [2024-11-27 20:26:33,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230877691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:33,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:26:33,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 42 [2024-11-27 20:26:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837406437] [2024-11-27 20:26:33,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:33,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 20:26:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:33,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 20:26:33,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1422, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 20:26:33,621 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 42 states have internal predecessors, (92), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-27 20:26:43,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:43,594 INFO L93 Difference]: Finished difference Result 230 states and 271 transitions. [2024-11-27 20:26:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-27 20:26:43,595 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 42 states have internal predecessors, (92), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2024-11-27 20:26:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:43,596 INFO L225 Difference]: With dead ends: 230 [2024-11-27 20:26:43,596 INFO L226 Difference]: Without dead ends: 210 [2024-11-27 20:26:43,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=752, Invalid=4504, Unknown=0, NotChecked=0, Total=5256 [2024-11-27 20:26:43,598 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 144 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:43,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 628 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-27 20:26:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-27 20:26:43,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 139. [2024-11-27 20:26:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 125 states have (on average 1.184) internal successors, (148), 125 states have internal predecessors, (148), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:26:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2024-11-27 20:26:43,634 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 60 [2024-11-27 20:26:43,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:43,634 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2024-11-27 20:26:43,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 42 states have internal predecessors, (92), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-27 20:26:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2024-11-27 20:26:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:26:43,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:43,636 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:43,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:26:43,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:43,837 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:43,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1888287808, now seen corresponding path program 5 times [2024-11-27 20:26:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398377396] [2024-11-27 20:26:43,837 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:26:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:43,855 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 20:26:43,855 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:26:43,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:43,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398377396] [2024-11-27 20:26:43,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398377396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:43,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455790160] [2024-11-27 20:26:43,968 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:26:43,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:43,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:43,971 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:43,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:26:44,061 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 20:26:44,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:44,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:26:44,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:26:44,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:26:44,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455790160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:44,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:44,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-27 20:26:44,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272561832] [2024-11-27 20:26:44,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:44,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:26:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:44,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:26:44,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:26:44,208 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:26:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:44,540 INFO L93 Difference]: Finished difference Result 319 states and 381 transitions. [2024-11-27 20:26:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:26:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-27 20:26:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:44,542 INFO L225 Difference]: With dead ends: 319 [2024-11-27 20:26:44,542 INFO L226 Difference]: Without dead ends: 211 [2024-11-27 20:26:44,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:26:44,543 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 40 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:44,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 181 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:26:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-27 20:26:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 173. [2024-11-27 20:26:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 155 states have (on average 1.1612903225806452) internal successors, (180), 155 states have internal predecessors, (180), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:26:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 202 transitions. [2024-11-27 20:26:44,597 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 202 transitions. Word has length 62 [2024-11-27 20:26:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:44,597 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 202 transitions. [2024-11-27 20:26:44,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:26:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 202 transitions. [2024-11-27 20:26:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:26:44,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:44,599 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:44,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:26:44,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:44,799 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:44,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1019981024, now seen corresponding path program 6 times [2024-11-27 20:26:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131742129] [2024-11-27 20:26:44,800 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:26:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:44,835 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 20:26:44,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:26:45,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:45,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131742129] [2024-11-27 20:26:45,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131742129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:45,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681080685] [2024-11-27 20:26:45,011 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:26:45,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:45,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:45,014 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:45,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:26:45,373 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 20:26:45,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:45,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:26:45,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:26:45,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:26:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681080685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:45,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:45,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-27 20:26:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556360332] [2024-11-27 20:26:45,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:45,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:26:45,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:45,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:26:45,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:26:45,686 INFO L87 Difference]: Start difference. First operand 173 states and 202 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:26:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:46,355 INFO L93 Difference]: Finished difference Result 257 states and 298 transitions. [2024-11-27 20:26:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:26:46,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 62 [2024-11-27 20:26:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:46,358 INFO L225 Difference]: With dead ends: 257 [2024-11-27 20:26:46,358 INFO L226 Difference]: Without dead ends: 221 [2024-11-27 20:26:46,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:26:46,359 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 113 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:46,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 104 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:26:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-27 20:26:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2024-11-27 20:26:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 183 states have (on average 1.1530054644808743) internal successors, (211), 183 states have internal predecessors, (211), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:26:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 233 transitions. [2024-11-27 20:26:46,427 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 233 transitions. Word has length 62 [2024-11-27 20:26:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:46,428 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 233 transitions. [2024-11-27 20:26:46,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:26:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 233 transitions. [2024-11-27 20:26:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:26:46,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:46,429 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:46,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:26:46,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:26:46,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:46,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:46,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1980183666, now seen corresponding path program 7 times [2024-11-27 20:26:46,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:46,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283873912] [2024-11-27 20:26:46,631 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:26:46,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 37 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:26:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283873912] [2024-11-27 20:26:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283873912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272578058] [2024-11-27 20:26:46,893 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:26:46,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:46,895 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:46,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:26:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:46,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:26:46,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:26:47,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:26:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272578058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:47,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-27 20:26:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547996874] [2024-11-27 20:26:47,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:47,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:26:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:47,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:26:47,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:26:47,376 INFO L87 Difference]: Start difference. First operand 201 states and 233 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:26:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:47,882 INFO L93 Difference]: Finished difference Result 259 states and 297 transitions. [2024-11-27 20:26:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:26:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-27 20:26:47,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:47,885 INFO L225 Difference]: With dead ends: 259 [2024-11-27 20:26:47,885 INFO L226 Difference]: Without dead ends: 159 [2024-11-27 20:26:47,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:26:47,886 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:47,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 168 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:26:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-27 20:26:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2024-11-27 20:26:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 128 states have (on average 1.125) internal successors, (144), 128 states have internal predecessors, (144), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:26:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2024-11-27 20:26:47,942 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 68 [2024-11-27 20:26:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:47,942 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2024-11-27 20:26:47,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:26:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2024-11-27 20:26:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 20:26:47,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:47,945 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:47,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:26:48,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:26:48,145 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:48,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 708249942, now seen corresponding path program 1 times [2024-11-27 20:26:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:48,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777460573] [2024-11-27 20:26:48,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:26:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349178461] [2024-11-27 20:26:48,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:48,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:48,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:48,188 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:48,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:26:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:48,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-27 20:26:48,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:48,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:26:48,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-27 20:26:49,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:49,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:49,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:26:49,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-27 20:26:49,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:49,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:49,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:49,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:26:49,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-27 20:26:50,426 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:26:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:50,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:50,466 INFO L349 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2024-11-27 20:26:50,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 74 treesize of output 98 [2024-11-27 20:26:51,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:51,704 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:26:51,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:51,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:51,725 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2024-11-27 20:26:51,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 74 treesize of output 94 [2024-11-27 20:26:53,149 INFO L349 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2024-11-27 20:26:53,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 66 treesize of output 38 [2024-11-27 20:26:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:26:53,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:55,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777460573] [2024-11-27 20:26:55,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:26:55,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349178461] [2024-11-27 20:26:55,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349178461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:55,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:26:55,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2024-11-27 20:26:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317892953] [2024-11-27 20:26:55,379 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:55,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 20:26:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:55,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 20:26:55,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2515, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 20:26:55,381 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 41 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 34 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:26:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:57,579 INFO L93 Difference]: Finished difference Result 228 states and 260 transitions. [2024-11-27 20:26:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-27 20:26:57,579 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 34 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 74 [2024-11-27 20:26:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:57,581 INFO L225 Difference]: With dead ends: 228 [2024-11-27 20:26:57,581 INFO L226 Difference]: Without dead ends: 206 [2024-11-27 20:26:57,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=537, Invalid=3623, Unknown=0, NotChecked=0, Total=4160 [2024-11-27 20:26:57,583 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 131 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:57,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 284 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:26:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-27 20:26:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 169. [2024-11-27 20:26:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 148 states have (on average 1.1283783783783783) internal successors, (167), 148 states have internal predecessors, (167), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:26:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2024-11-27 20:26:57,626 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 74 [2024-11-27 20:26:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:57,626 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2024-11-27 20:26:57,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 34 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:26:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2024-11-27 20:26:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 20:26:57,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:57,628 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:57,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 20:26:57,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:57,828 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:57,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 574236436, now seen corresponding path program 1 times [2024-11-27 20:26:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81088446] [2024-11-27 20:26:57,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:26:57,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816849648] [2024-11-27 20:26:57,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:57,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:57,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:57,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:26:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:58,472 WARN L254 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-27 20:26:58,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:58,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:26:58,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-27 20:26:58,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:26:58,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-27 20:26:59,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:26:59,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-27 20:26:59,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:59,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:59,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:59,914 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:26:59,934 INFO L349 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2024-11-27 20:26:59,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 74 treesize of output 98 [2024-11-27 20:27:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:01,036 INFO L349 Elim1Store]: treesize reduction 284, result has 13.1 percent of original size [2024-11-27 20:27:01,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 42 case distinctions, treesize of input 84 treesize of output 94 [2024-11-27 20:27:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:27:01,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81088446] [2024-11-27 20:27:03,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:27:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816849648] [2024-11-27 20:27:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816849648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:03,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:27:03,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2024-11-27 20:27:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16768185] [2024-11-27 20:27:03,287 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:03,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:27:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:03,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:27:03,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2214, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 20:27:03,288 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand has 38 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 31 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:27:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:05,136 INFO L93 Difference]: Finished difference Result 215 states and 243 transitions. [2024-11-27 20:27:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 20:27:05,136 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 31 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 74 [2024-11-27 20:27:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:05,139 INFO L225 Difference]: With dead ends: 215 [2024-11-27 20:27:05,139 INFO L226 Difference]: Without dead ends: 193 [2024-11-27 20:27:05,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=403, Invalid=2789, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:27:05,140 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 104 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:05,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 385 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:27:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-27 20:27:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 177. [2024-11-27 20:27:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 153 states have (on average 1.130718954248366) internal successors, (173), 153 states have internal predecessors, (173), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:27:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 203 transitions. [2024-11-27 20:27:05,201 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 203 transitions. Word has length 74 [2024-11-27 20:27:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:05,201 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 203 transitions. [2024-11-27 20:27:05,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 31 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:27:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 203 transitions. [2024-11-27 20:27:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 20:27:05,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:05,203 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:05,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 20:27:05,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:27:05,404 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:05,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash -321109356, now seen corresponding path program 2 times [2024-11-27 20:27:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:05,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106232150] [2024-11-27 20:27:05,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:27:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:05,444 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:27:05,444 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:27:05,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061843085] [2024-11-27 20:27:05,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:27:05,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:05,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:05,450 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:05,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:27:05,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:27:05,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:05,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-27 20:27:05,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:05,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:27:06,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-27 20:27:06,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:06,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:06,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:27:06,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-27 20:27:06,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:06,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:06,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:06,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:27:06,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-27 20:27:07,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:07,659 INFO L349 Elim1Store]: treesize reduction 284, result has 13.1 percent of original size [2024-11-27 20:27:07,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 42 case distinctions, treesize of input 84 treesize of output 94 [2024-11-27 20:27:08,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:08,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:08,260 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:27:08,284 INFO L349 Elim1Store]: treesize reduction 55, result has 16.7 percent of original size [2024-11-27 20:27:08,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 84 treesize of output 78 [2024-11-27 20:27:09,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:09,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:09,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:09,535 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:27:09,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:27:09,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 19 [2024-11-27 20:27:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 20:27:09,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:12,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:12,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106232150] [2024-11-27 20:27:12,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:27:12,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061843085] [2024-11-27 20:27:12,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061843085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:12,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:27:12,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2024-11-27 20:27:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170813363] [2024-11-27 20:27:12,018 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:12,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 20:27:12,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:12,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 20:27:12,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 20:27:12,020 INFO L87 Difference]: Start difference. First operand 177 states and 203 transitions. Second operand has 33 states, 32 states have (on average 1.6875) internal successors, (54), 29 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:13,375 INFO L93 Difference]: Finished difference Result 251 states and 290 transitions. [2024-11-27 20:27:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 20:27:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.6875) internal successors, (54), 29 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 74 [2024-11-27 20:27:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:13,378 INFO L225 Difference]: With dead ends: 251 [2024-11-27 20:27:13,378 INFO L226 Difference]: Without dead ends: 229 [2024-11-27 20:27:13,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=300, Invalid=2150, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 20:27:13,379 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 91 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:13,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 253 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:27:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-27 20:27:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 189. [2024-11-27 20:27:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 162 states have (on average 1.1296296296296295) internal successors, (183), 162 states have internal predecessors, (183), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 20:27:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 217 transitions. [2024-11-27 20:27:13,438 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 217 transitions. Word has length 74 [2024-11-27 20:27:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:13,438 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 217 transitions. [2024-11-27 20:27:13,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.6875) internal successors, (54), 29 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 217 transitions. [2024-11-27 20:27:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 20:27:13,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:13,440 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:13,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 20:27:13,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:27:13,641 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:13,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1237021976, now seen corresponding path program 2 times [2024-11-27 20:27:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:13,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972135990] [2024-11-27 20:27:13,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:27:13,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:13,664 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:27:13,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-27 20:27:13,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:13,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972135990] [2024-11-27 20:27:13,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972135990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155385958] [2024-11-27 20:27:13,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:27:13,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:13,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:13,842 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:27:13,957 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:27:13,957 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:13,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:27:13,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 54 proven. 17 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 20:27:14,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 35 proven. 20 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-27 20:27:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155385958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:14,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-27 20:27:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157082377] [2024-11-27 20:27:14,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:14,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:27:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:14,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:27:14,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:27:14,210 INFO L87 Difference]: Start difference. First operand 189 states and 217 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:27:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:14,506 INFO L93 Difference]: Finished difference Result 237 states and 269 transitions. [2024-11-27 20:27:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:27:14,507 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2024-11-27 20:27:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:14,508 INFO L225 Difference]: With dead ends: 237 [2024-11-27 20:27:14,508 INFO L226 Difference]: Without dead ends: 179 [2024-11-27 20:27:14,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:27:14,509 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 62 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:14,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 153 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:27:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-27 20:27:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2024-11-27 20:27:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 149 states have (on average 1.1208053691275168) internal successors, (167), 149 states have internal predecessors, (167), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:27:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2024-11-27 20:27:14,557 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 82 [2024-11-27 20:27:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:14,557 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2024-11-27 20:27:14,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:27:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2024-11-27 20:27:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:27:14,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:14,559 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:14,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 20:27:14,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:14,763 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:14,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2080752146, now seen corresponding path program 3 times [2024-11-27 20:27:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831635503] [2024-11-27 20:27:14,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:27:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:14,851 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-27 20:27:14,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:27:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308129539] [2024-11-27 20:27:14,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:27:14,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:14,857 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:14,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e50f37-dd14-4da9-b5a4-c1ec7dbdcc70/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:27:16,619 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-27 20:27:16,619 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:16,622 WARN L254 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-27 20:27:16,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:16,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:27:16,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-27 20:27:17,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:17,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:17,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:27:17,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-27 20:27:17,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:17,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:17,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:17,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:27:17,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-27 20:27:18,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:18,156 INFO L349 Elim1Store]: treesize reduction 80, result has 27.9 percent of original size [2024-11-27 20:27:18,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 88 treesize of output 120 [2024-11-27 20:27:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:22,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:22,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:22,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:22,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:24,804 INFO L349 Elim1Store]: treesize reduction 801, result has 18.1 percent of original size [2024-11-27 20:27:24,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 9 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 111 case distinctions, treesize of input 245 treesize of output 372 [2024-11-27 20:28:37,055 WARN L286 SmtUtils]: Spent 24.01s on a formula simplification. DAG size of input: 363 DAG size of output: 364 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:30:28,400 WARN L286 SmtUtils]: Spent 28.89s on a formula simplification. DAG size of input: 617 DAG size of output: 617 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:31:34,760 WARN L286 SmtUtils]: Spent 21.05s on a formula simplification that was a NOOP. DAG size: 620 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:32:37,999 WARN L286 SmtUtils]: Spent 21.21s on a formula simplification that was a NOOP. DAG size: 620 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)