./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum5.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_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/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_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/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_4fe25920-ce90-4b85-91c8-1189b0d184c9/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 1caf94d5755d978efe1a3e5e557e469a697b8b845c60d509025c0b6bf4eae4ae --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:29:36,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:29:36,533 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:29:36,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:29:36,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:29:36,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:29:36,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:29:36,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:29:36,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:29:36,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:29:36,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:29:36,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:29:36,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:29:36,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:29:36,579 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:29:36,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:29:36,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:29:36,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:29:36,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:29:36,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:29:36,581 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:29:36,581 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:29:36,581 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:29:36,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:36,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:36,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:36,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:29:36,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:29:36,583 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_4fe25920-ce90-4b85-91c8-1189b0d184c9/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 -> 1caf94d5755d978efe1a3e5e557e469a697b8b845c60d509025c0b6bf4eae4ae [2024-11-27 20:29:36,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:29:36,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:29:36,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:29:36,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:29:36,930 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:29:36,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-crafted/zero_sum5.c [2024-11-27 20:29:40,061 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/data/0431c8d64/47fe697ec1924bc481c78932eec7181a/FLAG8a98e1bbe [2024-11-27 20:29:40,359 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:29:40,360 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/sv-benchmarks/c/array-crafted/zero_sum5.c [2024-11-27 20:29:40,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/data/0431c8d64/47fe697ec1924bc481c78932eec7181a/FLAG8a98e1bbe [2024-11-27 20:29:40,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/data/0431c8d64/47fe697ec1924bc481c78932eec7181a [2024-11-27 20:29:40,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:29:40,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:29:40,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:40,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:29:40,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:29:40,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346a06d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40, skipping insertion in model container [2024-11-27 20:29:40,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:29:40,584 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_4fe25920-ce90-4b85-91c8-1189b0d184c9/sv-benchmarks/c/array-crafted/zero_sum5.c[400,413] [2024-11-27 20:29:40,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:40,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:29:40,633 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_4fe25920-ce90-4b85-91c8-1189b0d184c9/sv-benchmarks/c/array-crafted/zero_sum5.c[400,413] [2024-11-27 20:29:40,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:40,665 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:29:40,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40 WrapperNode [2024-11-27 20:29:40,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:40,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:40,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:29:40,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:29:40,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,706 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2024-11-27 20:29:40,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:40,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:29:40,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:29:40,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:29:40,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,734 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 20:29:40,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,742 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:29:40,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:29:40,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:29:40,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:29:40,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (1/1) ... [2024-11-27 20:29:40,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:40,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:29:40,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:29:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:29:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:29:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:29:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:29:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:29:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:29:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:29:40,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:29:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:29:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:29:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:29:40,920 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:29:40,922 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:29:41,168 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-27 20:29:41,168 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:29:41,185 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:29:41,185 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-27 20:29:41,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:41 BoogieIcfgContainer [2024-11-27 20:29:41,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:29:41,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:29:41,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:29:41,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:29:41,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:29:40" (1/3) ... [2024-11-27 20:29:41,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b713d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:41, skipping insertion in model container [2024-11-27 20:29:41,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:40" (2/3) ... [2024-11-27 20:29:41,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b713d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:41, skipping insertion in model container [2024-11-27 20:29:41,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:41" (3/3) ... [2024-11-27 20:29:41,198 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum5.c [2024-11-27 20:29:41,217 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:29:41,219 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum5.c that has 1 procedures, 44 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2024-11-27 20:29:41,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:29:41,303 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;@400b6a4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:29:41,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:29:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 20:29:41,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:41,317 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:41,318 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:41,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash -562518598, now seen corresponding path program 1 times [2024-11-27 20:29:41,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:41,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326572384] [2024-11-27 20:29:41,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:41,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:41,520 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 20:29:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326572384] [2024-11-27 20:29:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326572384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:41,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:29:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947198969] [2024-11-27 20:29:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:41,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:29:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:41,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:29:41,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:29:41,554 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:41,571 INFO L93 Difference]: Finished difference Result 83 states and 126 transitions. [2024-11-27 20:29:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:29:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-27 20:29:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:41,579 INFO L225 Difference]: With dead ends: 83 [2024-11-27 20:29:41,579 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 20:29:41,582 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 20:29:41,586 INFO L435 NwaCegarLoop]: 55 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, 55 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 20:29:41,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:29:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 20:29:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-27 20:29:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-27 20:29:41,626 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 27 [2024-11-27 20:29:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:41,627 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-27 20:29:41,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-27 20:29:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 20:29:41,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:41,629 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:41,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:29:41,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:41,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2110255686, now seen corresponding path program 1 times [2024-11-27 20:29:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:41,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397537721] [2024-11-27 20:29:41,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:41,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:41,801 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 20:29:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397537721] [2024-11-27 20:29:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397537721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:41,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:41,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:29:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648886269] [2024-11-27 20:29:41,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:41,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:29:41,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:41,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:29:41,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:29:41,804 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:41,880 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2024-11-27 20:29:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:29:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-27 20:29:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:41,882 INFO L225 Difference]: With dead ends: 75 [2024-11-27 20:29:41,882 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 20:29:41,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:29:41,883 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:41,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:41,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 20:29:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-27 20:29:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-27 20:29:41,890 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 27 [2024-11-27 20:29:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:41,890 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-27 20:29:41,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-27 20:29:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 20:29:41,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:41,892 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:41,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:29:41,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:41,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -933107926, now seen corresponding path program 1 times [2024-11-27 20:29:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654201315] [2024-11-27 20:29:41,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:41,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:29:42,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:42,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654201315] [2024-11-27 20:29:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654201315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:42,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:42,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:29:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129841349] [2024-11-27 20:29:42,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:42,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:29:42,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:42,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:29:42,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:29:42,060 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:42,242 INFO L93 Difference]: Finished difference Result 91 states and 119 transitions. [2024-11-27 20:29:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:29:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-27 20:29:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:42,243 INFO L225 Difference]: With dead ends: 91 [2024-11-27 20:29:42,243 INFO L226 Difference]: Without dead ends: 60 [2024-11-27 20:29:42,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:29:42,245 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:42,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 21 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:29:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-27 20:29:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-11-27 20:29:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-27 20:29:42,259 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 29 [2024-11-27 20:29:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:42,261 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-27 20:29:42,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-27 20:29:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 20:29:42,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:42,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:42,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:29:42,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:42,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1346168274, now seen corresponding path program 1 times [2024-11-27 20:29:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122614956] [2024-11-27 20:29:42,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:29:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:42,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122614956] [2024-11-27 20:29:42,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122614956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:42,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26283098] [2024-11-27 20:29:42,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:42,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:42,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:42,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:42,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:29:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:42,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:29:42,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:29:42,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:29:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26283098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:42,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:42,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-27 20:29:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587680597] [2024-11-27 20:29:42,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:42,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:29:42,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:42,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:29:42,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:29:42,814 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:42,923 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2024-11-27 20:29:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:29:42,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-27 20:29:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:42,925 INFO L225 Difference]: With dead ends: 97 [2024-11-27 20:29:42,925 INFO L226 Difference]: Without dead ends: 53 [2024-11-27 20:29:42,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:29:42,926 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:42,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 113 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-27 20:29:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-27 20:29:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-11-27 20:29:42,933 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 49 [2024-11-27 20:29:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:42,934 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-11-27 20:29:42,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-11-27 20:29:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-27 20:29:42,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:42,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:42,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:29:43,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:43,136 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:43,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash 206854070, now seen corresponding path program 2 times [2024-11-27 20:29:43,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:43,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933133376] [2024-11-27 20:29:43,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:29:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:43,182 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:29:43,182 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:43,387 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 20:29:43,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:43,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933133376] [2024-11-27 20:29:43,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933133376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:43,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855300714] [2024-11-27 20:29:43,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:29:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:43,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:43,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:29:43,475 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:29:43,476 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:43,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:29:43,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:43,599 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 20:29:43,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:43,721 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 20:29:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855300714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:43,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-27 20:29:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926736321] [2024-11-27 20:29:43,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:43,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:29:43,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:43,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:29:43,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:29:43,726 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:44,024 INFO L93 Difference]: Finished difference Result 122 states and 150 transitions. [2024-11-27 20:29:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:29:44,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-27 20:29:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:44,025 INFO L225 Difference]: With dead ends: 122 [2024-11-27 20:29:44,025 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 20:29:44,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:29:44,027 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:44,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 33 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:29:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 20:29:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2024-11-27 20:29:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-27 20:29:44,042 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 51 [2024-11-27 20:29:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:44,042 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-27 20:29:44,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-27 20:29:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:29:44,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:44,044 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 20:29:44,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:44,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:44,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:44,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:44,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1550985310, now seen corresponding path program 3 times [2024-11-27 20:29:44,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:44,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932439951] [2024-11-27 20:29:44,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:29:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:44,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:29:44,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932439951] [2024-11-27 20:29:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932439951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295453517] [2024-11-27 20:29:51,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:29:51,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:51,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:51,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:51,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:29:51,576 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:29:51,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:51,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-27 20:29:51,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:29:52,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:52,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:29:52,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 43 [2024-11-27 20:29:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:29:52,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295453517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:52,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 10] total 35 [2024-11-27 20:29:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148336017] [2024-11-27 20:29:52,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:52,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:29:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:52,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:29:52,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:29:52,911 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:54,677 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2024-11-27 20:29:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:29:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-27 20:29:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:54,679 INFO L225 Difference]: With dead ends: 143 [2024-11-27 20:29:54,680 INFO L226 Difference]: Without dead ends: 139 [2024-11-27 20:29:54,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=1274, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 20:29:54,682 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:54,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 154 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:29:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-27 20:29:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 125. [2024-11-27 20:29:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 124 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2024-11-27 20:29:54,701 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 71 [2024-11-27 20:29:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:54,702 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2024-11-27 20:29:54,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2024-11-27 20:29:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 20:29:54,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:54,704 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:54,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:29:54,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:54,908 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:54,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1369415810, now seen corresponding path program 4 times [2024-11-27 20:29:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:54,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178739423] [2024-11-27 20:29:54,909 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:29:54,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:54,933 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:29:54,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:29:55,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:55,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178739423] [2024-11-27 20:29:55,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178739423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875288370] [2024-11-27 20:29:55,073 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:29:55,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:55,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:55,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:55,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:29:55,171 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:29:55,171 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:55,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:29:55,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:29:55,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:29:55,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875288370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:55,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:55,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-27 20:29:55,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274488520] [2024-11-27 20:29:55,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:55,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:29:55,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:55,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:29:55,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:29:55,362 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:56,094 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2024-11-27 20:29:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:29:56,095 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-27 20:29:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:56,096 INFO L225 Difference]: With dead ends: 207 [2024-11-27 20:29:56,100 INFO L226 Difference]: Without dead ends: 155 [2024-11-27 20:29:56,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 136 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 20:29:56,103 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:56,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 54 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:29:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-27 20:29:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135. [2024-11-27 20:29:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1417910447761195) internal successors, (153), 134 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2024-11-27 20:29:56,138 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 73 [2024-11-27 20:29:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:56,138 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2024-11-27 20:29:56,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2024-11-27 20:29:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 20:29:56,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:56,139 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:56,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:56,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:56,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:56,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 82011074, now seen corresponding path program 5 times [2024-11-27 20:29:56,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657415871] [2024-11-27 20:29:56,341 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:29:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:56,387 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:29:56,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:29:56,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:56,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657415871] [2024-11-27 20:29:56,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657415871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999943193] [2024-11-27 20:29:56,568 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:29:56,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:56,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:56,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:29:56,739 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:29:56,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:56,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:29:56,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:29:56,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:29:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999943193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:57,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:57,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-27 20:29:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911124157] [2024-11-27 20:29:57,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:57,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:29:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:57,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:29:57,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:29:57,124 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:57,528 INFO L93 Difference]: Finished difference Result 276 states and 313 transitions. [2024-11-27 20:29:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:57,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-27 20:29:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:57,530 INFO L225 Difference]: With dead ends: 276 [2024-11-27 20:29:57,530 INFO L226 Difference]: Without dead ends: 138 [2024-11-27 20:29:57,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:29:57,532 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:57,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 91 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:29:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-27 20:29:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2024-11-27 20:29:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1397058823529411) internal successors, (155), 136 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2024-11-27 20:29:57,548 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 73 [2024-11-27 20:29:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:57,549 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2024-11-27 20:29:57,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2024-11-27 20:29:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 20:29:57,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:57,550 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:57,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:29:57,751 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:57,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1191417434, now seen corresponding path program 6 times [2024-11-27 20:29:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:57,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115719723] [2024-11-27 20:29:57,752 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:29:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:57,786 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-27 20:29:57,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:29:57,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:57,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115719723] [2024-11-27 20:29:57,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115719723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:57,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524693708] [2024-11-27 20:29:57,928 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:29:57,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:57,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:57,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:29:58,066 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-27 20:29:58,066 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:58,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:29:58,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:29:58,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:29:58,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524693708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:58,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:58,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-27 20:29:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441564493] [2024-11-27 20:29:58,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:58,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:29:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:58,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:29:58,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:29:58,277 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:58,656 INFO L93 Difference]: Finished difference Result 228 states and 255 transitions. [2024-11-27 20:29:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 20:29:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:58,658 INFO L225 Difference]: With dead ends: 228 [2024-11-27 20:29:58,659 INFO L226 Difference]: Without dead ends: 104 [2024-11-27 20:29:58,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:29:58,660 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 119 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:58,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 49 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:29:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-27 20:29:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2024-11-27 20:29:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2024-11-27 20:29:58,677 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 75 [2024-11-27 20:29:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:58,678 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2024-11-27 20:29:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2024-11-27 20:29:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 20:29:58,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:58,679 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:58,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:58,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 20:29:58,880 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:58,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1926596118, now seen corresponding path program 7 times [2024-11-27 20:29:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366197107] [2024-11-27 20:29:58,881 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:29:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:06,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366197107] [2024-11-27 20:30:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366197107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:06,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948708595] [2024-11-27 20:30:06,646 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:30:06,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:06,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:06,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:06,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:30:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:06,773 WARN L254 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-27 20:30:06,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:06,836 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 20:30:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:07,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:30:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948708595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:08,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 15, 11] total 49 [2024-11-27 20:30:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380800582] [2024-11-27 20:30:08,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:08,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 20:30:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:08,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 20:30:08,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2172, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 20:30:08,267 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 49 states, 49 states have (on average 4.979591836734694) internal successors, (244), 49 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:13,629 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2024-11-27 20:30:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 20:30:13,629 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.979591836734694) internal successors, (244), 49 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-27 20:30:13,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:13,631 INFO L225 Difference]: With dead ends: 249 [2024-11-27 20:30:13,631 INFO L226 Difference]: Without dead ends: 245 [2024-11-27 20:30:13,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=518, Invalid=5182, Unknown=0, NotChecked=0, Total=5700 [2024-11-27 20:30:13,635 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 443 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 4112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:13,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 216 Invalid, 4112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 20:30:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-27 20:30:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 99. [2024-11-27 20:30:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2024-11-27 20:30:13,669 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 93 [2024-11-27 20:30:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:13,669 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2024-11-27 20:30:13,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.979591836734694) internal successors, (244), 49 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2024-11-27 20:30:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 20:30:13,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:13,671 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:13,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:30:13,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:13,871 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:13,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:13,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1036196110, now seen corresponding path program 8 times [2024-11-27 20:30:13,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:13,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417971924] [2024-11-27 20:30:13,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:13,898 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:13,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 20:30:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417971924] [2024-11-27 20:30:14,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417971924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234848486] [2024-11-27 20:30:14,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:14,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:14,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:14,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:14,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:30:14,207 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:14,208 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:14,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:30:14,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 20:30:14,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 20:30:14,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234848486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:14,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-27 20:30:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491632755] [2024-11-27 20:30:14,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:14,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:30:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:14,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:30:14,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:14,633 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:15,190 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2024-11-27 20:30:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:30:15,190 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-27 20:30:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:15,191 INFO L225 Difference]: With dead ends: 265 [2024-11-27 20:30:15,191 INFO L226 Difference]: Without dead ends: 102 [2024-11-27 20:30:15,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 177 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:15,193 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:15,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 97 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:30:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-27 20:30:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-27 20:30:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2024-11-27 20:30:15,217 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 95 [2024-11-27 20:30:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:15,217 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2024-11-27 20:30:15,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2024-11-27 20:30:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 20:30:15,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:15,218 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:15,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:30:15,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:15,419 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:15,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -179905550, now seen corresponding path program 9 times [2024-11-27 20:30:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952160428] [2024-11-27 20:30:15,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:15,494 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 20:30:15,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 20:30:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952160428] [2024-11-27 20:30:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952160428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:15,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764256178] [2024-11-27 20:30:15,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:15,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:15,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:15,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:15,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:30:15,805 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 20:30:15,806 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:15,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:30:15,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 20:30:15,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 20:30:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764256178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:16,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:16,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-27 20:30:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093088519] [2024-11-27 20:30:16,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:16,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:30:16,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:16,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:30:16,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:16,037 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:16,647 INFO L93 Difference]: Finished difference Result 277 states and 313 transitions. [2024-11-27 20:30:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:30:16,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-27 20:30:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:16,649 INFO L225 Difference]: With dead ends: 277 [2024-11-27 20:30:16,649 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 20:30:16,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 184 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:30:16,650 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 131 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:16,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 59 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:30:16,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 20:30:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2024-11-27 20:30:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 113 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2024-11-27 20:30:16,677 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 97 [2024-11-27 20:30:16,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:16,678 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2024-11-27 20:30:16,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2024-11-27 20:30:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 20:30:16,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:16,679 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-27 20:30:16,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:16,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:30:16,880 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:16,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash -642941934, now seen corresponding path program 10 times [2024-11-27 20:30:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309414023] [2024-11-27 20:30:16,880 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:30:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:16,906 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:30:16,906 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309414023] [2024-11-27 20:30:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309414023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527695442] [2024-11-27 20:30:17,072 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:30:17,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:17,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:17,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:30:17,187 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:30:17,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:17,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:30:17,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:17,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527695442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:17,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:17,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-27 20:30:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892276984] [2024-11-27 20:30:17,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:17,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:30:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:17,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:30:17,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:30:17,666 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:18,279 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2024-11-27 20:30:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:30:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-27 20:30:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:18,281 INFO L225 Difference]: With dead ends: 129 [2024-11-27 20:30:18,281 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 20:30:18,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 213 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:30:18,282 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 171 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:18,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 51 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:30:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 20:30:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2024-11-27 20:30:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0956521739130434) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2024-11-27 20:30:18,311 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 113 [2024-11-27 20:30:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:18,311 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2024-11-27 20:30:18,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2024-11-27 20:30:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 20:30:18,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:18,314 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 20:30:18,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:18,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:30:18,515 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:18,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash 546871926, now seen corresponding path program 11 times [2024-11-27 20:30:18,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:18,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205335272] [2024-11-27 20:30:18,516 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:30:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:18,669 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 20:30:18,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205335272] [2024-11-27 20:30:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205335272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270065656] [2024-11-27 20:30:27,095 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:30:27,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:27,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:27,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:27,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:30:27,677 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 20:30:27,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:27,682 WARN L254 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-11-27 20:30:27,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:27,775 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 20:30:27,832 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 20:30:27,880 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 20:30:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:29,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270065656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:29,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 13] total 40 [2024-11-27 20:30:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458256091] [2024-11-27 20:30:29,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:29,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 20:30:29,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:29,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 20:30:29,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1434, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:30:29,637 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 40 states, 40 states have (on average 7.45) internal successors, (298), 40 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:31,374 INFO L93 Difference]: Finished difference Result 223 states and 242 transitions. [2024-11-27 20:30:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:30:31,375 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.45) internal successors, (298), 40 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-27 20:30:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:31,377 INFO L225 Difference]: With dead ends: 223 [2024-11-27 20:30:31,377 INFO L226 Difference]: Without dead ends: 219 [2024-11-27 20:30:31,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=1434, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:30:31,378 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:31,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 516 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3145 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:30:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-27 20:30:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 201. [2024-11-27 20:30:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.1) internal successors, (220), 200 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 220 transitions. [2024-11-27 20:30:31,419 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 220 transitions. Word has length 115 [2024-11-27 20:30:31,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:31,420 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 220 transitions. [2024-11-27 20:30:31,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.45) internal successors, (298), 40 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:31,420 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 220 transitions. [2024-11-27 20:30:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 20:30:31,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:31,422 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 20:30:31,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:31,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:30:31,623 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:31,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1766585190, now seen corresponding path program 12 times [2024-11-27 20:30:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435804787] [2024-11-27 20:30:31,623 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:30:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:31,678 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 20:30:31,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435804787] [2024-11-27 20:30:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435804787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507875519] [2024-11-27 20:30:31,933 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:30:31,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:31,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:31,936 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:30:32,204 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 20:30:32,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:32,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:30:32,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:32,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:32,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507875519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:32,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-27 20:30:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136742420] [2024-11-27 20:30:32,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:32,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:30:32,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:32,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:30:32,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:30:32,738 INFO L87 Difference]: Start difference. First operand 201 states and 220 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:33,807 INFO L93 Difference]: Finished difference Result 319 states and 354 transitions. [2024-11-27 20:30:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:30:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-27 20:30:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:33,809 INFO L225 Difference]: With dead ends: 319 [2024-11-27 20:30:33,809 INFO L226 Difference]: Without dead ends: 235 [2024-11-27 20:30:33,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 217 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:30:33,814 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 184 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:33,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 82 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:30:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-27 20:30:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 207. [2024-11-27 20:30:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0922330097087378) internal successors, (225), 206 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 225 transitions. [2024-11-27 20:30:33,871 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 225 transitions. Word has length 117 [2024-11-27 20:30:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:33,871 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 225 transitions. [2024-11-27 20:30:33,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 225 transitions. [2024-11-27 20:30:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 20:30:33,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:33,873 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 20:30:33,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:34,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:30:34,078 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:34,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:34,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1496690650, now seen corresponding path program 13 times [2024-11-27 20:30:34,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:34,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909782692] [2024-11-27 20:30:34,078 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:30:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909782692] [2024-11-27 20:30:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909782692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502057115] [2024-11-27 20:30:34,345 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:30:34,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:34,348 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:34,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:30:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:34,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:30:34,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:34,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:30:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502057115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:35,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:35,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-27 20:30:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400843380] [2024-11-27 20:30:35,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:35,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:30:35,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:35,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:30:35,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:30:35,072 INFO L87 Difference]: Start difference. First operand 207 states and 225 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:35,697 INFO L93 Difference]: Finished difference Result 424 states and 461 transitions. [2024-11-27 20:30:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:30:35,698 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-27 20:30:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:35,700 INFO L225 Difference]: With dead ends: 424 [2024-11-27 20:30:35,700 INFO L226 Difference]: Without dead ends: 210 [2024-11-27 20:30:35,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:30:35,701 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 55 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:35,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 77 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:30:35,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-27 20:30:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2024-11-27 20:30:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0913461538461537) internal successors, (227), 208 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 227 transitions. [2024-11-27 20:30:35,743 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 227 transitions. Word has length 117 [2024-11-27 20:30:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:35,744 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 227 transitions. [2024-11-27 20:30:35,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 227 transitions. [2024-11-27 20:30:35,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 20:30:35,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:35,746 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 20:30:35,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:30:35,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:30:35,950 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:35,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash -423071810, now seen corresponding path program 14 times [2024-11-27 20:30:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:35,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141822586] [2024-11-27 20:30:35,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:35,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:35,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-27 20:30:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:36,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141822586] [2024-11-27 20:30:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141822586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585663672] [2024-11-27 20:30:36,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:36,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:36,206 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:36,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:30:36,329 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:36,329 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:36,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:30:36,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-27 20:30:36,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-27 20:30:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585663672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:36,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-27 20:30:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727428412] [2024-11-27 20:30:36,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:36,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:30:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:36,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:30:36,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:30:36,571 INFO L87 Difference]: Start difference. First operand 209 states and 227 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:36,969 INFO L93 Difference]: Finished difference Result 321 states and 347 transitions. [2024-11-27 20:30:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:30:36,970 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-27 20:30:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:36,971 INFO L225 Difference]: With dead ends: 321 [2024-11-27 20:30:36,971 INFO L226 Difference]: Without dead ends: 148 [2024-11-27 20:30:36,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 221 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:30:36,972 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 153 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:36,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 80 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:30:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-27 20:30:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 138. [2024-11-27 20:30:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 137 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2024-11-27 20:30:37,014 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 119 [2024-11-27 20:30:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:37,014 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2024-11-27 20:30:37,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2024-11-27 20:30:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-27 20:30:37,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:37,017 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 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 20:30:37,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:37,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:30:37,217 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:37,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash -195081726, now seen corresponding path program 15 times [2024-11-27 20:30:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673446284] [2024-11-27 20:30:37,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:37,359 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 20:30:37,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:48,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673446284] [2024-11-27 20:30:48,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673446284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:48,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657338692] [2024-11-27 20:30:48,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:48,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:48,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:48,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:48,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:30:48,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 20:30:48,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:48,417 WARN L254 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-11-27 20:30:48,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:48,518 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 19 treesize of output 1 [2024-11-27 20:30:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:30:50,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:30:50,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-27 20:30:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 9 proven. 250 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:50,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:52,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657338692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:52,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:52,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 23, 21] total 62 [2024-11-27 20:30:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348998850] [2024-11-27 20:30:52,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:52,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 20:30:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:52,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 20:30:52,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3512, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 20:30:52,487 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 62 states, 62 states have (on average 5.209677419354839) internal successors, (323), 62 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:57,002 INFO L93 Difference]: Finished difference Result 262 states and 281 transitions. [2024-11-27 20:30:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 20:30:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.209677419354839) internal successors, (323), 62 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2024-11-27 20:30:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:57,004 INFO L225 Difference]: With dead ends: 262 [2024-11-27 20:30:57,004 INFO L226 Difference]: Without dead ends: 258 [2024-11-27 20:30:57,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 290 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=414, Invalid=4842, Unknown=0, NotChecked=0, Total=5256 [2024-11-27 20:30:57,007 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4144 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 4144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:57,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 145 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 4144 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:30:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-27 20:30:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 239. [2024-11-27 20:30:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.084033613445378) internal successors, (258), 238 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 258 transitions. [2024-11-27 20:30:57,064 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 258 transitions. Word has length 137 [2024-11-27 20:30:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:57,064 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 258 transitions. [2024-11-27 20:30:57,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.209677419354839) internal successors, (323), 62 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 258 transitions. [2024-11-27 20:30:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 20:30:57,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:57,066 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 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 20:30:57,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 20:30:57,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:30:57,267 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:57,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1107826982, now seen corresponding path program 16 times [2024-11-27 20:30:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:57,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261867363] [2024-11-27 20:30:57,268 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:30:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:57,295 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:30:57,295 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 20:30:57,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:57,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261867363] [2024-11-27 20:30:57,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261867363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:57,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42679417] [2024-11-27 20:30:57,529 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:30:57,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:57,531 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:57,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:30:57,660 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:30:57,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:57,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:30:57,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 20:30:57,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 20:30:57,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42679417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:57,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:57,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-11-27 20:30:57,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582903990] [2024-11-27 20:30:57,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:57,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:30:57,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:57,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:30:57,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:30:57,948 INFO L87 Difference]: Start difference. First operand 239 states and 258 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:58,941 INFO L93 Difference]: Finished difference Result 375 states and 410 transitions. [2024-11-27 20:30:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:30:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-11-27 20:30:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:58,943 INFO L225 Difference]: With dead ends: 375 [2024-11-27 20:30:58,943 INFO L226 Difference]: Without dead ends: 275 [2024-11-27 20:30:58,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 259 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:30:58,945 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 253 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:58,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 64 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:30:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-27 20:30:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 243. [2024-11-27 20:30:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.078512396694215) internal successors, (261), 242 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 261 transitions. [2024-11-27 20:30:58,999 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 261 transitions. Word has length 139 [2024-11-27 20:30:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:58,999 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 261 transitions. [2024-11-27 20:30:58,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 261 transitions. [2024-11-27 20:30:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 20:30:59,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:59,001 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 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 20:30:59,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 20:30:59,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:59,201 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:59,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1443802214, now seen corresponding path program 17 times [2024-11-27 20:30:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344996679] [2024-11-27 20:30:59,202 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:30:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:59,262 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 20:30:59,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 20:30:59,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:59,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344996679] [2024-11-27 20:30:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344996679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:59,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155849551] [2024-11-27 20:30:59,557 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:30:59,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:59,560 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:59,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:31:00,159 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 20:31:00,160 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:00,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:31:00,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 20:31:00,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 20:31:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155849551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:31:00,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:31:00,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-11-27 20:31:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738384790] [2024-11-27 20:31:00,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:31:00,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:31:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:00,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:31:00,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:31:00,522 INFO L87 Difference]: Start difference. First operand 243 states and 261 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:01,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:01,204 INFO L93 Difference]: Finished difference Result 394 states and 421 transitions. [2024-11-27 20:31:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:31:01,205 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-11-27 20:31:01,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:01,206 INFO L225 Difference]: With dead ends: 394 [2024-11-27 20:31:01,206 INFO L226 Difference]: Without dead ends: 168 [2024-11-27 20:31:01,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 266 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:31:01,207 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 280 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:01,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 70 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:31:01,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-27 20:31:01,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2024-11-27 20:31:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.070063694267516) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2024-11-27 20:31:01,253 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 139 [2024-11-27 20:31:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:01,254 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2024-11-27 20:31:01,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2024-11-27 20:31:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:31:01,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:01,255 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 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 20:31:01,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 20:31:01,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:01,455 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:01,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:01,456 INFO L85 PathProgramCache]: Analyzing trace with hash -12370774, now seen corresponding path program 18 times [2024-11-27 20:31:01,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:01,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527581177] [2024-11-27 20:31:01,456 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:31:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:01,573 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 20:31:01,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 20:31:01,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527581177] [2024-11-27 20:31:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527581177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537489785] [2024-11-27 20:31:01,912 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:31:01,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:01,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:01,915 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:01,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:31:02,238 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 20:31:02,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:02,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:31:02,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 20:31:02,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 20:31:02,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537489785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:31:02,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:31:02,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-27 20:31:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666782526] [2024-11-27 20:31:02,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:31:02,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:31:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:02,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:31:02,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:31:02,613 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:02,834 INFO L93 Difference]: Finished difference Result 305 states and 325 transitions. [2024-11-27 20:31:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:31:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-11-27 20:31:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:02,836 INFO L225 Difference]: With dead ends: 305 [2024-11-27 20:31:02,836 INFO L226 Difference]: Without dead ends: 161 [2024-11-27 20:31:02,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 295 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:31:02,837 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:02,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 199 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:31:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-27 20:31:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2024-11-27 20:31:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.069182389937107) internal successors, (170), 159 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2024-11-27 20:31:02,867 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 157 [2024-11-27 20:31:02,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:02,867 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2024-11-27 20:31:02,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2024-11-27 20:31:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-27 20:31:02,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:02,869 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 20:31:02,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 20:31:03,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 20:31:03,069 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:03,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash -779007858, now seen corresponding path program 19 times [2024-11-27 20:31:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:03,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315946229] [2024-11-27 20:31:03,070 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:31:03,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 28 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:22,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315946229] [2024-11-27 20:31:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315946229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343345206] [2024-11-27 20:31:22,887 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:31:22,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:22,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:22,890 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:22,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:31:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:23,044 WARN L254 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 264 conjuncts are in the unsatisfiable core [2024-11-27 20:31:23,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:23,255 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 20:31:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:25,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:31:27,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343345206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:31:27,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:31:27,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 24, 17] total 94 [2024-11-27 20:31:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126097750] [2024-11-27 20:31:27,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:31:27,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-27 20:31:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:27,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-27 20:31:27,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=8346, Unknown=0, NotChecked=0, Total=8742 [2024-11-27 20:31:27,131 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 94 states, 94 states have (on average 4.585106382978723) internal successors, (431), 94 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:39,526 INFO L93 Difference]: Finished difference Result 675 states and 733 transitions. [2024-11-27 20:31:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-27 20:31:39,528 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.585106382978723) internal successors, (431), 94 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2024-11-27 20:31:39,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:39,530 INFO L225 Difference]: With dead ends: 675 [2024-11-27 20:31:39,531 INFO L226 Difference]: Without dead ends: 482 [2024-11-27 20:31:39,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6347 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1461, Invalid=20591, Unknown=0, NotChecked=0, Total=22052 [2024-11-27 20:31:39,537 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 959 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 9317 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 10592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 9317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:39,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 239 Invalid, 10592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 9317 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-27 20:31:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-27 20:31:39,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 355. [2024-11-27 20:31:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.07909604519774) internal successors, (382), 354 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 382 transitions. [2024-11-27 20:31:39,622 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 382 transitions. Word has length 159 [2024-11-27 20:31:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:39,622 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 382 transitions. [2024-11-27 20:31:39,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.585106382978723) internal successors, (431), 94 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 382 transitions. [2024-11-27 20:31:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-27 20:31:39,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:39,624 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 20:31:39,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 20:31:39,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:39,825 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:39,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:39,825 INFO L85 PathProgramCache]: Analyzing trace with hash 502671318, now seen corresponding path program 20 times [2024-11-27 20:31:39,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:39,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347425931] [2024-11-27 20:31:39,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:31:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:39,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:31:39,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-27 20:31:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347425931] [2024-11-27 20:31:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347425931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677356141] [2024-11-27 20:31:40,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:31:40,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:40,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:40,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:40,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 20:31:40,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:31:40,222 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:40,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:31:40,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-27 20:31:40,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-27 20:31:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677356141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:31:40,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:31:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-27 20:31:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863067165] [2024-11-27 20:31:40,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:31:40,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 20:31:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:40,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 20:31:40,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:31:40,540 INFO L87 Difference]: Start difference. First operand 355 states and 382 transitions. Second operand has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:41,135 INFO L93 Difference]: Finished difference Result 499 states and 542 transitions. [2024-11-27 20:31:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:31:41,136 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-11-27 20:31:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:41,137 INFO L225 Difference]: With dead ends: 499 [2024-11-27 20:31:41,137 INFO L226 Difference]: Without dead ends: 192 [2024-11-27 20:31:41,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 303 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:31:41,138 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 288 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:41,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 93 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:31:41,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-27 20:31:41,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 182. [2024-11-27 20:31:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.0607734806629834) internal successors, (192), 181 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2024-11-27 20:31:41,196 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 163 [2024-11-27 20:31:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:41,196 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions. [2024-11-27 20:31:41,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions. [2024-11-27 20:31:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 20:31:41,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:41,197 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 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 20:31:41,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 20:31:41,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:41,398 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:41,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1196337638, now seen corresponding path program 21 times [2024-11-27 20:31:41,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:41,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876959424] [2024-11-27 20:31:41,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:31:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:41,669 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:31:41,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 2 proven. 537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:03,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:03,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876959424] [2024-11-27 20:32:03,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876959424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:03,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791212093] [2024-11-27 20:32:03,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:32:03,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:03,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:03,174 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:03,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 20:32:03,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:32:03,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:03,387 WARN L254 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 319 conjuncts are in the unsatisfiable core [2024-11-27 20:32:03,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:03,655 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 20:32:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:32:07,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:32:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:32:07,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:32:07,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 44 treesize of output 59 [2024-11-27 20:32:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 539 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:07,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:32:10,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791212093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:10,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:10,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 34, 25] total 99 [2024-11-27 20:32:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593790781] [2024-11-27 20:32:10,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:10,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-27 20:32:10,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:10,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-27 20:32:11,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=8953, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 20:32:11,001 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand has 99 states, 99 states have (on average 5.212121212121212) internal successors, (516), 99 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:21,615 INFO L93 Difference]: Finished difference Result 516 states and 546 transitions. [2024-11-27 20:32:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-27 20:32:21,616 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 5.212121212121212) internal successors, (516), 99 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-27 20:32:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:21,618 INFO L225 Difference]: With dead ends: 516 [2024-11-27 20:32:21,618 INFO L226 Difference]: Without dead ends: 511 [2024-11-27 20:32:21,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 356 SyntacticMatches, 20 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6621 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1373, Invalid=17809, Unknown=0, NotChecked=0, Total=19182 [2024-11-27 20:32:21,621 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 131 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 8296 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 8628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 8296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:21,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 221 Invalid, 8628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 8296 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-27 20:32:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-27 20:32:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 315. [2024-11-27 20:32:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0636942675159236) internal successors, (334), 314 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 334 transitions. [2024-11-27 20:32:21,711 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 334 transitions. Word has length 181 [2024-11-27 20:32:21,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:21,711 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 334 transitions. [2024-11-27 20:32:21,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 5.212121212121212) internal successors, (516), 99 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:21,712 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 334 transitions. [2024-11-27 20:32:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:32:21,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:21,713 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 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 20:32:21,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 20:32:21,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:21,914 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:21,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash 875667262, now seen corresponding path program 22 times [2024-11-27 20:32:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690458428] [2024-11-27 20:32:21,914 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:32:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:21,943 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:32:21,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-27 20:32:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690458428] [2024-11-27 20:32:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690458428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999702800] [2024-11-27 20:32:22,190 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:32:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:22,191 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:22,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 20:32:22,334 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:32:22,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:22,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:32:22,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-27 20:32:22,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-27 20:32:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999702800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:22,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:22,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-11-27 20:32:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524735578] [2024-11-27 20:32:22,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:22,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 20:32:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:22,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 20:32:22,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:32:22,671 INFO L87 Difference]: Start difference. First operand 315 states and 334 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:24,026 INFO L93 Difference]: Finished difference Result 487 states and 522 transitions. [2024-11-27 20:32:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:32:24,027 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-27 20:32:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:24,029 INFO L225 Difference]: With dead ends: 487 [2024-11-27 20:32:24,029 INFO L226 Difference]: Without dead ends: 355 [2024-11-27 20:32:24,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 341 SyntacticMatches, 17 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:32:24,030 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 279 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:24,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 65 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:32:24,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-27 20:32:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 315. [2024-11-27 20:32:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0605095541401275) internal successors, (333), 314 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 333 transitions. [2024-11-27 20:32:24,122 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 333 transitions. Word has length 183 [2024-11-27 20:32:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:24,123 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 333 transitions. [2024-11-27 20:32:24,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 333 transitions. [2024-11-27 20:32:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:32:24,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:24,124 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 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 20:32:24,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-27 20:32:24,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:24,326 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:24,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1309545086, now seen corresponding path program 23 times [2024-11-27 20:32:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:24,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523027350] [2024-11-27 20:32:24,327 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:32:24,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:24,427 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-27 20:32:24,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-27 20:32:24,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523027350] [2024-11-27 20:32:24,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523027350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188852919] [2024-11-27 20:32:24,799 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:32:24,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:24,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:24,802 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:24,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 20:32:30,149 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-27 20:32:30,150 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:30,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:32:30,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-27 20:32:30,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-27 20:32:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188852919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:30,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:30,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-11-27 20:32:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132964793] [2024-11-27 20:32:30,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:30,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 20:32:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:30,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 20:32:30,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:32:30,747 INFO L87 Difference]: Start difference. First operand 315 states and 333 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:31,680 INFO L93 Difference]: Finished difference Result 506 states and 533 transitions. [2024-11-27 20:32:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:32:31,680 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-27 20:32:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:31,681 INFO L225 Difference]: With dead ends: 506 [2024-11-27 20:32:31,682 INFO L226 Difference]: Without dead ends: 212 [2024-11-27 20:32:31,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 350 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:32:31,682 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 461 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:31,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 67 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:32:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-27 20:32:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2024-11-27 20:32:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.054726368159204) internal successors, (212), 201 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 212 transitions. [2024-11-27 20:32:31,755 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 212 transitions. Word has length 183 [2024-11-27 20:32:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:31,755 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 212 transitions. [2024-11-27 20:32:31,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 212 transitions. [2024-11-27 20:32:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-27 20:32:31,756 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:31,757 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 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 20:32:31,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-27 20:32:31,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:31,957 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:31,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2027646146, now seen corresponding path program 24 times [2024-11-27 20:32:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:31,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880361718] [2024-11-27 20:32:31,958 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:32:31,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:32,117 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-27 20:32:32,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 20:32:32,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:32,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880361718] [2024-11-27 20:32:32,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880361718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:32,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245253628] [2024-11-27 20:32:32,509 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:32:32,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:32,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:32,511 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:32,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 20:32:32,908 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-27 20:32:32,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:32,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:32:32,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 20:32:33,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 20:32:33,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245253628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:33,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:33,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-27 20:32:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540629552] [2024-11-27 20:32:33,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:33,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:32:33,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:33,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:32:33,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:32:33,543 INFO L87 Difference]: Start difference. First operand 202 states and 212 transitions. Second operand has 29 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:33,829 INFO L93 Difference]: Finished difference Result 389 states and 409 transitions. [2024-11-27 20:32:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:32:33,829 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-27 20:32:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:33,831 INFO L225 Difference]: With dead ends: 389 [2024-11-27 20:32:33,831 INFO L226 Difference]: Without dead ends: 205 [2024-11-27 20:32:33,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 377 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:32:33,831 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:33,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 167 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:32:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-27 20:32:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2024-11-27 20:32:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0541871921182266) internal successors, (214), 203 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 214 transitions. [2024-11-27 20:32:33,893 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 214 transitions. Word has length 201 [2024-11-27 20:32:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:33,893 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 214 transitions. [2024-11-27 20:32:33,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 214 transitions. [2024-11-27 20:32:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:32:33,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:33,895 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 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 20:32:33,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 20:32:34,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:34,095 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:34,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash 766653094, now seen corresponding path program 25 times [2024-11-27 20:32:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:34,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280450879] [2024-11-27 20:32:34,096 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:32:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 72 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:58,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:58,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280450879] [2024-11-27 20:32:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280450879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:58,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477523117] [2024-11-27 20:32:58,967 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:32:58,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:58,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:58,969 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 20:32:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:59,183 WARN L254 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 348 conjuncts are in the unsatisfiable core [2024-11-27 20:32:59,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:59,466 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 20:33:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:00,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 20:33:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477523117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:03,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:03,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 30, 21] total 103 [2024-11-27 20:33:03,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794824398] [2024-11-27 20:33:03,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:03,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-27 20:33:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:03,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-27 20:33:03,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=10019, Unknown=0, NotChecked=0, Total=10506 [2024-11-27 20:33:03,826 INFO L87 Difference]: Start difference. First operand 204 states and 214 transitions. Second operand has 103 states, 103 states have (on average 4.902912621359223) internal successors, (505), 103 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:21,367 INFO L93 Difference]: Finished difference Result 467 states and 507 transitions. [2024-11-27 20:33:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-27 20:33:21,368 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 4.902912621359223) internal successors, (505), 103 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-27 20:33:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:21,371 INFO L225 Difference]: With dead ends: 467 [2024-11-27 20:33:21,371 INFO L226 Difference]: Without dead ends: 463 [2024-11-27 20:33:21,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7217 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=1943, Invalid=25447, Unknown=0, NotChecked=0, Total=27390 [2024-11-27 20:33:21,375 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 1356 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 12276 mSolverCounterSat, 1471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 13747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 12276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:21,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 302 Invalid, 13747 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1471 Valid, 12276 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-27 20:33:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-27 20:33:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 209. [2024-11-27 20:33:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0576923076923077) internal successors, (220), 208 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 220 transitions. [2024-11-27 20:33:21,458 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 220 transitions. Word has length 203 [2024-11-27 20:33:21,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:21,458 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 220 transitions. [2024-11-27 20:33:21,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 4.902912621359223) internal successors, (505), 103 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 220 transitions. [2024-11-27 20:33:21,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:33:21,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:21,460 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 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 20:33:21,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 20:33:21,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:21,660 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:21,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1723718966, now seen corresponding path program 26 times [2024-11-27 20:33:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138832867] [2024-11-27 20:33:21,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:21,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:21,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 20:33:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138832867] [2024-11-27 20:33:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138832867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61463957] [2024-11-27 20:33:22,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:22,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:22,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:22,071 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:22,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 20:33:22,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:22,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:22,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:33:22,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 20:33:22,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 20:33:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61463957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:23,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:23,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-27 20:33:23,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302712479] [2024-11-27 20:33:23,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:23,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 20:33:23,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:23,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 20:33:23,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:33:23,020 INFO L87 Difference]: Start difference. First operand 209 states and 220 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:24,202 INFO L93 Difference]: Finished difference Result 565 states and 596 transitions. [2024-11-27 20:33:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:33:24,203 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-11-27 20:33:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:24,204 INFO L225 Difference]: With dead ends: 565 [2024-11-27 20:33:24,204 INFO L226 Difference]: Without dead ends: 212 [2024-11-27 20:33:24,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 382 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:33:24,206 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 142 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:24,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:33:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-27 20:33:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2024-11-27 20:33:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0571428571428572) internal successors, (222), 210 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 222 transitions. [2024-11-27 20:33:24,312 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 222 transitions. Word has length 205 [2024-11-27 20:33:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:24,313 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 222 transitions. [2024-11-27 20:33:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 222 transitions. [2024-11-27 20:33:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-27 20:33:24,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:24,314 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 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 20:33:24,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:24,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 20:33:24,515 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash -675588434, now seen corresponding path program 27 times [2024-11-27 20:33:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532682927] [2024-11-27 20:33:24,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:24,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 20:33:24,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-27 20:33:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532682927] [2024-11-27 20:33:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532682927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247914813] [2024-11-27 20:33:25,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:25,041 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:25,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 20:33:25,373 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 20:33:25,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:25,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:33:25,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-27 20:33:25,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-27 20:33:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247914813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:26,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-27 20:33:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774855484] [2024-11-27 20:33:26,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:26,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 20:33:26,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:26,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 20:33:26,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:33:26,023 INFO L87 Difference]: Start difference. First operand 211 states and 222 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:27,131 INFO L93 Difference]: Finished difference Result 557 states and 593 transitions. [2024-11-27 20:33:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:33:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-27 20:33:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:27,134 INFO L225 Difference]: With dead ends: 557 [2024-11-27 20:33:27,134 INFO L226 Difference]: Without dead ends: 240 [2024-11-27 20:33:27,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 394 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:33:27,135 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 484 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:27,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 69 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:33:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-27 20:33:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2024-11-27 20:33:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0493273542600896) internal successors, (234), 223 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 234 transitions. [2024-11-27 20:33:27,251 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 234 transitions. Word has length 207 [2024-11-27 20:33:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:27,251 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 234 transitions. [2024-11-27 20:33:27,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 234 transitions. [2024-11-27 20:33:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-27 20:33:27,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:27,253 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 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 20:33:27,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:27,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:27,453 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:27,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2129739470, now seen corresponding path program 28 times [2024-11-27 20:33:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:27,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980685767] [2024-11-27 20:33:27,454 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:33:27,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:27,501 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:33:27,501 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:33:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980685767] [2024-11-27 20:33:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980685767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263578151] [2024-11-27 20:33:27,844 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:33:27,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:27,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:27,845 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:27,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 20:33:28,023 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:33:28,023 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:28,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:33:28,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:33:28,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:33:28,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263578151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:28,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:28,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-11-27 20:33:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146168003] [2024-11-27 20:33:28,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:28,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 20:33:28,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:28,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 20:33:28,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:33:28,761 INFO L87 Difference]: Start difference. First operand 224 states and 234 transitions. Second operand has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:29,963 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2024-11-27 20:33:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:33:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-27 20:33:29,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:29,965 INFO L225 Difference]: With dead ends: 239 [2024-11-27 20:33:29,965 INFO L226 Difference]: Without dead ends: 235 [2024-11-27 20:33:29,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 418 SyntacticMatches, 19 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=549, Invalid=1803, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 20:33:29,966 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 425 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:29,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 43 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:33:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-27 20:33:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 226. [2024-11-27 20:33:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.048888888888889) internal successors, (236), 225 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 236 transitions. [2024-11-27 20:33:30,036 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 236 transitions. Word has length 223 [2024-11-27 20:33:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:30,036 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 236 transitions. [2024-11-27 20:33:30,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 236 transitions. [2024-11-27 20:33:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 20:33:30,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:30,037 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 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 20:33:30,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:30,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-27 20:33:30,238 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:30,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2080989646, now seen corresponding path program 29 times [2024-11-27 20:33:30,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:30,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823391325] [2024-11-27 20:33:30,238 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:33:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:30,965 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-27 20:33:30,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:00,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823391325] [2024-11-27 20:34:00,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823391325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:00,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99386693] [2024-11-27 20:34:00,740 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:34:00,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:00,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:00,742 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:00,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 20:34:22,792 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-27 20:34:22,792 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:22,824 WARN L254 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 397 conjuncts are in the unsatisfiable core [2024-11-27 20:34:22,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:22,872 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 20:34:22,887 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 20:34:22,902 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 20:34:22,915 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 20:34:22,931 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 20:34:22,947 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 20:34:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:24,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 810 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 20:34:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99386693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:26,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 33, 23] total 62 [2024-11-27 20:34:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836580425] [2024-11-27 20:34:26,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:26,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 20:34:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:26,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 20:34:26,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3600, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 20:34:26,097 INFO L87 Difference]: Start difference. First operand 226 states and 236 transitions. Second operand has 62 states, 62 states have (on average 7.32258064516129) internal successors, (454), 62 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:32,235 INFO L93 Difference]: Finished difference Result 423 states and 442 transitions. [2024-11-27 20:34:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 20:34:32,236 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.32258064516129) internal successors, (454), 62 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2024-11-27 20:34:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:32,237 INFO L225 Difference]: With dead ends: 423 [2024-11-27 20:34:32,238 INFO L226 Difference]: Without dead ends: 419 [2024-11-27 20:34:32,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=182, Invalid=3600, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 20:34:32,238 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 7975 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 7976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:32,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 409 Invalid, 7976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7975 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 20:34:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-27 20:34:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 391. [2024-11-27 20:34:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.0512820512820513) internal successors, (410), 390 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 410 transitions. [2024-11-27 20:34:32,396 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 410 transitions. Word has length 225 [2024-11-27 20:34:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:32,397 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 410 transitions. [2024-11-27 20:34:32,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.32258064516129) internal successors, (454), 62 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 410 transitions. [2024-11-27 20:34:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-27 20:34:32,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:32,399 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 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 20:34:32,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-27 20:34:32,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-27 20:34:32,600 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:32,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 274686294, now seen corresponding path program 30 times [2024-11-27 20:34:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:32,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57411846] [2024-11-27 20:34:32,600 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:34:32,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:32,793 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-27 20:34:32,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:34:33,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:33,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57411846] [2024-11-27 20:34:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57411846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817626059] [2024-11-27 20:34:33,287 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:34:33,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:33,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:33,291 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:33,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 20:34:33,977 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-27 20:34:33,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:33,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 20:34:33,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 98 proven. 100 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2024-11-27 20:34:34,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:34:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817626059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:34,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:34,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 23] total 47 [2024-11-27 20:34:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772758697] [2024-11-27 20:34:34,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:34,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-27 20:34:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:34,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-27 20:34:34,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=1625, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 20:34:34,909 INFO L87 Difference]: Start difference. First operand 391 states and 410 transitions. Second operand has 47 states, 47 states have (on average 2.8085106382978724) internal successors, (132), 47 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:37,982 INFO L93 Difference]: Finished difference Result 599 states and 634 transitions. [2024-11-27 20:34:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 20:34:37,983 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.8085106382978724) internal successors, (132), 47 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-27 20:34:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:37,985 INFO L225 Difference]: With dead ends: 599 [2024-11-27 20:34:37,985 INFO L226 Difference]: Without dead ends: 435 [2024-11-27 20:34:37,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 420 SyntacticMatches, 10 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1047, Invalid=3375, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 20:34:37,986 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 507 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:37,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 90 Invalid, 4870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:34:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-27 20:34:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 387. [2024-11-27 20:34:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.049222797927461) internal successors, (405), 386 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 405 transitions. [2024-11-27 20:34:38,149 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 405 transitions. Word has length 227 [2024-11-27 20:34:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:38,149 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 405 transitions. [2024-11-27 20:34:38,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.8085106382978724) internal successors, (132), 47 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 405 transitions. [2024-11-27 20:34:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-27 20:34:38,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:38,150 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 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 20:34:38,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:38,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-27 20:34:38,351 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:38,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1562490006, now seen corresponding path program 31 times [2024-11-27 20:34:38,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:38,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289787165] [2024-11-27 20:34:38,352 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:34:38,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:34:38,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289787165] [2024-11-27 20:34:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289787165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705290319] [2024-11-27 20:34:38,864 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:34:38,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:38,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:38,866 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:38,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 20:34:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:39,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:34:39,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:34:39,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 20:34:40,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705290319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:40,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:40,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-27 20:34:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817749493] [2024-11-27 20:34:40,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:40,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:34:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:40,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:34:40,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:34:40,215 INFO L87 Difference]: Start difference. First operand 387 states and 405 transitions. Second operand has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:41,483 INFO L93 Difference]: Finished difference Result 794 states and 831 transitions. [2024-11-27 20:34:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:34:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-27 20:34:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:41,486 INFO L225 Difference]: With dead ends: 794 [2024-11-27 20:34:41,486 INFO L226 Difference]: Without dead ends: 390 [2024-11-27 20:34:41,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 423 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:34:41,488 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 136 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:41,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 80 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:34:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-27 20:34:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2024-11-27 20:34:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.0489690721649485) internal successors, (407), 388 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 407 transitions. [2024-11-27 20:34:41,690 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 407 transitions. Word has length 227 [2024-11-27 20:34:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:41,690 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 407 transitions. [2024-11-27 20:34:41,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 407 transitions. [2024-11-27 20:34:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-27 20:34:41,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:41,692 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 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 20:34:41,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 20:34:41,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-27 20:34:41,892 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:41,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2138102406, now seen corresponding path program 32 times [2024-11-27 20:34:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955917122] [2024-11-27 20:34:41,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:41,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:41,940 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:41,940 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2024-11-27 20:34:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955917122] [2024-11-27 20:34:42,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955917122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142110999] [2024-11-27 20:34:42,356 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:42,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:42,358 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:42,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 20:34:42,578 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:42,578 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:42,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:34:42,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2024-11-27 20:34:42,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2024-11-27 20:34:43,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142110999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:43,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:43,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-27 20:34:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458559976] [2024-11-27 20:34:43,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:43,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:34:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:43,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:34:43,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:34:43,206 INFO L87 Difference]: Start difference. First operand 389 states and 407 transitions. Second operand has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:44,157 INFO L93 Difference]: Finished difference Result 581 states and 607 transitions. [2024-11-27 20:34:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:34:44,157 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-11-27 20:34:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:44,159 INFO L225 Difference]: With dead ends: 581 [2024-11-27 20:34:44,159 INFO L226 Difference]: Without dead ends: 258 [2024-11-27 20:34:44,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 426 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:34:44,160 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 371 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:44,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 77 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:34:44,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-27 20:34:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2024-11-27 20:34:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0445344129554657) internal successors, (258), 247 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 258 transitions. [2024-11-27 20:34:44,285 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 258 transitions. Word has length 229 [2024-11-27 20:34:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:44,285 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 258 transitions. [2024-11-27 20:34:44,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 258 transitions. [2024-11-27 20:34:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-27 20:34:44,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:44,286 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 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 20:34:44,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:44,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 20:34:44,487 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:44,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash 709974206, now seen corresponding path program 33 times [2024-11-27 20:34:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456843011] [2024-11-27 20:34:44,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:44,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 20:34:44,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 1000 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 20:35:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456843011] [2024-11-27 20:35:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456843011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809942684] [2024-11-27 20:35:18,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:35:18,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:18,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:18,760 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:18,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 20:35:19,271 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 20:35:19,271 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:19,282 WARN L254 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 433 conjuncts are in the unsatisfiable core [2024-11-27 20:35:19,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:19,471 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 23 treesize of output 1 [2024-11-27 20:35:19,571 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 19 treesize of output 1 [2024-11-27 20:35:27,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:35:27,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:35:27,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 92 treesize of output 165 [2024-11-27 20:35:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 19 proven. 1000 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 20:35:27,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 1070 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:35:34,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809942684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:34,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:34,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 33, 35] total 116 [2024-11-27 20:35:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163295471] [2024-11-27 20:35:34,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:34,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-27 20:35:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:34,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-27 20:35:34,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=12768, Unknown=0, NotChecked=0, Total=13340 [2024-11-27 20:35:34,862 INFO L87 Difference]: Start difference. First operand 248 states and 258 transitions. Second operand has 116 states, 116 states have (on average 5.939655172413793) internal successors, (689), 116 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:50,047 INFO L93 Difference]: Finished difference Result 462 states and 481 transitions. [2024-11-27 20:35:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 20:35:50,048 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 5.939655172413793) internal successors, (689), 116 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2024-11-27 20:35:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:50,050 INFO L225 Difference]: With dead ends: 462 [2024-11-27 20:35:50,050 INFO L226 Difference]: Without dead ends: 458 [2024-11-27 20:35:50,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 479 SyntacticMatches, 33 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7090 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=826, Invalid=16730, Unknown=0, NotChecked=0, Total=17556 [2024-11-27 20:35:50,051 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 12810 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 13077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 12810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:50,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 281 Invalid, 13077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 12810 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2024-11-27 20:35:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-27 20:35:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 429. [2024-11-27 20:35:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.0467289719626167) internal successors, (448), 428 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 448 transitions. [2024-11-27 20:35:50,249 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 448 transitions. Word has length 247 [2024-11-27 20:35:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:50,250 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 448 transitions. [2024-11-27 20:35:50,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 5.939655172413793) internal successors, (689), 116 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 448 transitions. [2024-11-27 20:35:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-27 20:35:50,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:50,252 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 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 20:35:50,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:50,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 20:35:50,453 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:50,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1360836834, now seen corresponding path program 34 times [2024-11-27 20:35:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:50,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411851888] [2024-11-27 20:35:50,454 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:35:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:50,497 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:35:50,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-11-27 20:35:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411851888] [2024-11-27 20:35:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411851888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109703414] [2024-11-27 20:35:51,023 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:35:51,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:51,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:51,025 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:51,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 20:35:51,282 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:35:51,282 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:51,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:35:51,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-11-27 20:35:51,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-11-27 20:35:51,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109703414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:51,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 36 [2024-11-27 20:35:51,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893741589] [2024-11-27 20:35:51,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:51,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 20:35:51,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:51,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 20:35:51,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:35:51,945 INFO L87 Difference]: Start difference. First operand 429 states and 448 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:54,521 INFO L93 Difference]: Finished difference Result 655 states and 690 transitions. [2024-11-27 20:35:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 20:35:54,522 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-27 20:35:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:54,524 INFO L225 Difference]: With dead ends: 655 [2024-11-27 20:35:54,524 INFO L226 Difference]: Without dead ends: 475 [2024-11-27 20:35:54,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 464 SyntacticMatches, 23 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=779, Invalid=2643, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 20:35:54,525 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 322 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:54,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 72 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 20:35:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-27 20:35:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 423. [2024-11-27 20:35:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.0450236966824644) internal successors, (441), 422 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 441 transitions. [2024-11-27 20:35:54,790 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 441 transitions. Word has length 249 [2024-11-27 20:35:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:54,790 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 441 transitions. [2024-11-27 20:35:54,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 441 transitions. [2024-11-27 20:35:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-27 20:35:54,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:54,792 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 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 20:35:54,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-27 20:35:54,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 20:35:54,993 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:54,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -675808222, now seen corresponding path program 35 times [2024-11-27 20:35:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455245677] [2024-11-27 20:35:54,994 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:35:54,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:55,761 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 20:35:55,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-11-27 20:35:56,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455245677] [2024-11-27 20:35:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455245677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798722523] [2024-11-27 20:35:56,356 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:35:56,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:56,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:56,359 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:56,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 20:36:26,093 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 20:36:26,093 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:26,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:36:26,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-11-27 20:36:26,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-11-27 20:36:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798722523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:27,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:27,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 36 [2024-11-27 20:36:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552597007] [2024-11-27 20:36:27,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:27,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 20:36:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:27,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 20:36:27,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:36:27,165 INFO L87 Difference]: Start difference. First operand 423 states and 441 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:28,612 INFO L93 Difference]: Finished difference Result 674 states and 701 transitions. [2024-11-27 20:36:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:36:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-27 20:36:28,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:28,614 INFO L225 Difference]: With dead ends: 674 [2024-11-27 20:36:28,614 INFO L226 Difference]: Without dead ends: 278 [2024-11-27 20:36:28,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 465 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 20:36:28,615 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 801 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:28,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 68 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:36:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-27 20:36:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2024-11-27 20:36:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.0411985018726593) internal successors, (278), 267 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 278 transitions. [2024-11-27 20:36:28,722 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 278 transitions. Word has length 249 [2024-11-27 20:36:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:28,722 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 278 transitions. [2024-11-27 20:36:28,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 278 transitions. [2024-11-27 20:36:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-27 20:36:28,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:28,723 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 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 20:36:28,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 20:36:28,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 20:36:28,923 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:28,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash 857826662, now seen corresponding path program 36 times [2024-11-27 20:36:28,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:28,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619963675] [2024-11-27 20:36:28,924 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:36:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:29,208 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 20:36:29,208 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-27 20:36:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619963675] [2024-11-27 20:36:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619963675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733635827] [2024-11-27 20:36:29,710 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:36:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:29,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:29,711 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:29,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 20:36:30,487 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 20:36:30,487 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:30,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 20:36:30,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 142 proven. 100 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2024-11-27 20:36:30,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 121 proven. 131 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-27 20:36:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733635827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:31,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 28] total 43 [2024-11-27 20:36:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808499393] [2024-11-27 20:36:31,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:31,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 20:36:31,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:31,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 20:36:31,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=1416, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 20:36:31,321 INFO L87 Difference]: Start difference. First operand 268 states and 278 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:32,229 INFO L93 Difference]: Finished difference Result 515 states and 535 transitions. [2024-11-27 20:36:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 20:36:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-27 20:36:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:32,231 INFO L225 Difference]: With dead ends: 515 [2024-11-27 20:36:32,231 INFO L226 Difference]: Without dead ends: 271 [2024-11-27 20:36:32,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 494 SyntacticMatches, 22 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=907, Invalid=2999, Unknown=0, NotChecked=0, Total=3906 [2024-11-27 20:36:32,232 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:32,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 187 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:36:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-27 20:36:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2024-11-27 20:36:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.0408921933085502) internal successors, (280), 269 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 280 transitions. [2024-11-27 20:36:32,385 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 280 transitions. Word has length 267 [2024-11-27 20:36:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:32,385 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 280 transitions. [2024-11-27 20:36:32,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 280 transitions. [2024-11-27 20:36:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-27 20:36:32,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:32,386 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 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 20:36:32,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 20:36:32,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 20:36:32,587 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:32,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:32,587 INFO L85 PathProgramCache]: Analyzing trace with hash -150658486, now seen corresponding path program 37 times [2024-11-27 20:36:32,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:32,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474986394] [2024-11-27 20:36:32,588 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:36:32,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 265 proven. 1066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:27,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:37:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474986394] [2024-11-27 20:37:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474986394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:37:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679111578] [2024-11-27 20:37:27,289 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:37:27,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:37:27,291 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:37:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 20:37:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:27,605 WARN L254 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 474 conjuncts are in the unsatisfiable core [2024-11-27 20:37:27,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:37:28,614 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 20:37:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 0 proven. 1331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:31,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:37:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 0 proven. 1210 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 20:37:37,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679111578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:37:37,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:37:37,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 39, 27] total 133 [2024-11-27 20:37:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799841752] [2024-11-27 20:37:37,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:37:37,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-11-27 20:37:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:37:37,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-11-27 20:37:37,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=16825, Unknown=0, NotChecked=0, Total=17556 [2024-11-27 20:37:37,228 INFO L87 Difference]: Start difference. First operand 270 states and 280 transitions. Second operand has 133 states, 133 states have (on average 5.180451127819549) internal successors, (689), 133 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:38:04,886 INFO L93 Difference]: Finished difference Result 564 states and 601 transitions. [2024-11-27 20:38:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-27 20:38:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 5.180451127819549) internal successors, (689), 133 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2024-11-27 20:38:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:38:04,888 INFO L225 Difference]: With dead ends: 564 [2024-11-27 20:38:04,888 INFO L226 Difference]: Without dead ends: 560 [2024-11-27 20:38:04,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10633 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=2320, Invalid=35510, Unknown=0, NotChecked=0, Total=37830 [2024-11-27 20:38:04,890 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 1601 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 18945 mSolverCounterSat, 1725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 20670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1725 IncrementalHoareTripleChecker+Valid, 18945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:38:04,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 344 Invalid, 20670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1725 Valid, 18945 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2024-11-27 20:38:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-27 20:38:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 275. [2024-11-27 20:38:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0437956204379562) internal successors, (286), 274 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 286 transitions. [2024-11-27 20:38:05,044 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 286 transitions. Word has length 269 [2024-11-27 20:38:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:38:05,045 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 286 transitions. [2024-11-27 20:38:05,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 5.180451127819549) internal successors, (689), 133 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 286 transitions. [2024-11-27 20:38:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-27 20:38:05,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:38:05,046 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 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 20:38:05,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 20:38:05,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 20:38:05,251 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:38:05,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:38:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash 420456814, now seen corresponding path program 38 times [2024-11-27 20:38:05,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:38:05,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67459890] [2024-11-27 20:38:05,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:38:05,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:38:05,306 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:38:05,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:38:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-27 20:38:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:38:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67459890] [2024-11-27 20:38:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67459890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:38:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123928928] [2024-11-27 20:38:05,963 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:38:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:38:05,965 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:38:05,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-27 20:38:06,241 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:38:06,241 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:38:06,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:38:06,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:38:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-27 20:38:06,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:38:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-27 20:38:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123928928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:38:07,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:38:07,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-27 20:38:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658628100] [2024-11-27 20:38:07,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:38:07,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 20:38:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:38:07,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 20:38:07,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:38:07,449 INFO L87 Difference]: Start difference. First operand 275 states and 286 transitions. Second operand has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 41 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:38:09,079 INFO L93 Difference]: Finished difference Result 745 states and 776 transitions. [2024-11-27 20:38:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:38:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 41 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-11-27 20:38:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:38:09,081 INFO L225 Difference]: With dead ends: 745 [2024-11-27 20:38:09,081 INFO L226 Difference]: Without dead ends: 278 [2024-11-27 20:38:09,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 505 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:38:09,082 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 160 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:38:09,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 88 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:38:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-27 20:38:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2024-11-27 20:38:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.0434782608695652) internal successors, (288), 276 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 288 transitions. [2024-11-27 20:38:09,278 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 288 transitions. Word has length 271 [2024-11-27 20:38:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:38:09,278 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 288 transitions. [2024-11-27 20:38:09,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 41 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 288 transitions. [2024-11-27 20:38:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 20:38:09,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:38:09,280 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 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 20:38:09,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-27 20:38:09,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:09,481 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:38:09,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:38:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1723706286, now seen corresponding path program 39 times [2024-11-27 20:38:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:38:09,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075234612] [2024-11-27 20:38:09,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:38:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:38:09,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-27 20:38:09,905 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:38:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2024-11-27 20:38:10,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:38:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075234612] [2024-11-27 20:38:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075234612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:38:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213846694] [2024-11-27 20:38:10,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:38:10,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:10,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:38:10,836 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:38:10,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 20:38:11,562 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-27 20:38:11,562 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:38:11,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:38:11,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:38:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2024-11-27 20:38:12,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:38:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2024-11-27 20:38:12,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213846694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:38:12,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:38:12,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-27 20:38:12,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447344734] [2024-11-27 20:38:12,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:38:12,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 20:38:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:38:12,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 20:38:12,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:38:12,768 INFO L87 Difference]: Start difference. First operand 277 states and 288 transitions. Second operand has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 41 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:38:14,719 INFO L93 Difference]: Finished difference Result 725 states and 761 transitions. [2024-11-27 20:38:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:38:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 41 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2024-11-27 20:38:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:38:14,721 INFO L225 Difference]: With dead ends: 725 [2024-11-27 20:38:14,721 INFO L226 Difference]: Without dead ends: 306 [2024-11-27 20:38:14,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 509 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=648, Invalid=2004, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 20:38:14,723 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 776 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:38:14,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 78 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:38:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-27 20:38:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 290. [2024-11-27 20:38:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.0380622837370241) internal successors, (300), 289 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 300 transitions. [2024-11-27 20:38:14,882 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 300 transitions. Word has length 273 [2024-11-27 20:38:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:38:14,883 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 300 transitions. [2024-11-27 20:38:14,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 41 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 300 transitions. [2024-11-27 20:38:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-27 20:38:14,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:38:14,885 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 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 20:38:14,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-27 20:38:15,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:15,086 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:38:15,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:38:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash -400149390, now seen corresponding path program 40 times [2024-11-27 20:38:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:38:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437051066] [2024-11-27 20:38:15,086 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:38:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:38:15,137 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:38:15,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:38:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:38:15,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:38:15,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437051066] [2024-11-27 20:38:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437051066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:38:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193785351] [2024-11-27 20:38:15,852 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:38:15,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:15,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:38:15,855 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:38:15,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-27 20:38:16,131 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:38:16,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:38:16,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:38:16,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:38:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:38:16,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:38:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:38:17,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193785351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:38:17,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:38:17,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 39 [2024-11-27 20:38:17,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86285154] [2024-11-27 20:38:17,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:38:17,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-27 20:38:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:38:17,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-27 20:38:17,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 20:38:17,303 INFO L87 Difference]: Start difference. First operand 290 states and 300 transitions. Second operand has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:38:19,183 INFO L93 Difference]: Finished difference Result 305 states and 315 transitions. [2024-11-27 20:38:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 20:38:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2024-11-27 20:38:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:38:19,185 INFO L225 Difference]: With dead ends: 305 [2024-11-27 20:38:19,185 INFO L226 Difference]: Without dead ends: 301 [2024-11-27 20:38:19,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 541 SyntacticMatches, 25 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=909, Invalid=3123, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 20:38:19,187 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 605 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:38:19,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 65 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:38:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-27 20:38:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 292. [2024-11-27 20:38:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.0378006872852235) internal successors, (302), 291 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 302 transitions. [2024-11-27 20:38:19,383 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 302 transitions. Word has length 289 [2024-11-27 20:38:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:38:19,383 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 302 transitions. [2024-11-27 20:38:19,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 302 transitions. [2024-11-27 20:38:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-27 20:38:19,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:38:19,385 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 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 20:38:19,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-27 20:38:19,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:19,586 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:38:19,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:38:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1942272726, now seen corresponding path program 41 times [2024-11-27 20:38:19,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:38:19,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232866325] [2024-11-27 20:38:19,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:38:19,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:38:21,971 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 20:38:21,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232866325] [2024-11-27 20:39:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232866325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449911123] [2024-11-27 20:39:14,636 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:39:14,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:14,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:14,638 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:14,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 20:39:27,716 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 20:39:27,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:27,754 WARN L254 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 528 conjuncts are in the unsatisfiable core [2024-11-27 20:39:27,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:39:27,828 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 20:39:27,844 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 20:39:27,855 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 20:39:27,873 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 20:39:27,893 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 20:39:27,909 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 20:39:27,994 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 20:39:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:39:30,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:39:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1440 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:39:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449911123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:39:34,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:39:34,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 42, 29] total 82 [2024-11-27 20:39:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215351742] [2024-11-27 20:39:34,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:39:34,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-27 20:39:34,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:39:34,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-27 20:39:34,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=6389, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 20:39:34,550 INFO L87 Difference]: Start difference. First operand 292 states and 302 transitions. Second operand has 82 states, 82 states have (on average 7.280487804878049) internal successors, (597), 82 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:39:48,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:39:48,665 INFO L93 Difference]: Finished difference Result 545 states and 565 transitions. [2024-11-27 20:39:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-27 20:39:48,666 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 7.280487804878049) internal successors, (597), 82 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-27 20:39:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:39:48,669 INFO L225 Difference]: With dead ends: 545 [2024-11-27 20:39:48,669 INFO L226 Difference]: Without dead ends: 541 [2024-11-27 20:39:48,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=253, Invalid=6389, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 20:39:48,670 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 18 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 16079 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 16081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:39:48,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 471 Invalid, 16081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16079 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2024-11-27 20:39:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-27 20:39:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 505. [2024-11-27 20:39:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.0396825396825398) internal successors, (524), 504 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:39:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 524 transitions. [2024-11-27 20:39:48,954 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 524 transitions. Word has length 291 [2024-11-27 20:39:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:39:48,954 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 524 transitions. [2024-11-27 20:39:48,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 7.280487804878049) internal successors, (597), 82 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:39:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 524 transitions. [2024-11-27 20:39:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-27 20:39:48,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:39:48,956 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 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 20:39:48,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-27 20:39:49,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:49,161 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:39:49,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:39:49,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1203901690, now seen corresponding path program 42 times [2024-11-27 20:39:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:39:49,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684575594] [2024-11-27 20:39:49,162 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:39:49,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:39:49,579 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-27 20:39:49,579 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:39:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684575594] [2024-11-27 20:39:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684575594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017862327] [2024-11-27 20:39:50,374 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:39:50,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:50,376 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:50,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-27 20:39:51,699 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-27 20:39:51,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:39:51,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 20:39:51,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:39:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:39:52,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:39:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:39:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017862327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:39:53,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:39:53,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-27 20:39:53,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598330477] [2024-11-27 20:39:53,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:39:53,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 20:39:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:39:53,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 20:39:53,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:39:53,077 INFO L87 Difference]: Start difference. First operand 505 states and 524 transitions. Second operand has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:39:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:39:56,433 INFO L93 Difference]: Finished difference Result 767 states and 802 transitions. [2024-11-27 20:39:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-27 20:39:56,434 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2024-11-27 20:39:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:39:56,436 INFO L225 Difference]: With dead ends: 767 [2024-11-27 20:39:56,436 INFO L226 Difference]: Without dead ends: 555 [2024-11-27 20:39:56,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 545 SyntacticMatches, 26 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1030, Invalid=3800, Unknown=0, NotChecked=0, Total=4830 [2024-11-27 20:39:56,437 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 394 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4699 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 5127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 4699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:39:56,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 83 Invalid, 5127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 4699 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:39:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-27 20:39:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 495. [2024-11-27 20:39:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.0384615384615385) internal successors, (513), 494 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:39:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 513 transitions. [2024-11-27 20:39:56,700 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 513 transitions. Word has length 293 [2024-11-27 20:39:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:39:56,700 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 513 transitions. [2024-11-27 20:39:56,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:39:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 513 transitions. [2024-11-27 20:39:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-27 20:39:56,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:39:56,701 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 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 20:39:56,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-27 20:39:56,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:56,902 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:39:56,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:39:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1847904198, now seen corresponding path program 43 times [2024-11-27 20:39:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:39:56,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438905605] [2024-11-27 20:39:56,903 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:39:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:39:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:39:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 146 proven. 167 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:39:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438905605] [2024-11-27 20:39:57,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438905605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521141606] [2024-11-27 20:39:57,682 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:39:57,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:57,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:57,689 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:57,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 20:39:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:39:58,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 20:39:58,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:39:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:39:58,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:39:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2024-11-27 20:39:59,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521141606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:39:59,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:39:59,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-27 20:39:59,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741112198] [2024-11-27 20:39:59,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:39:59,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 20:39:59,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:39:59,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 20:39:59,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:39:59,383 INFO L87 Difference]: Start difference. First operand 495 states and 513 transitions. Second operand has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:40:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:40:01,723 INFO L93 Difference]: Finished difference Result 1016 states and 1053 transitions. [2024-11-27 20:40:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 20:40:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2024-11-27 20:40:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:40:01,726 INFO L225 Difference]: With dead ends: 1016 [2024-11-27 20:40:01,726 INFO L226 Difference]: Without dead ends: 498 [2024-11-27 20:40:01,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 546 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:40:01,728 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 136 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 3194 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:40:01,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 150 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:40:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-27 20:40:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 497. [2024-11-27 20:40:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.0383064516129032) internal successors, (515), 496 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:40:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 515 transitions. [2024-11-27 20:40:02,002 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 515 transitions. Word has length 293 [2024-11-27 20:40:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:40:02,002 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 515 transitions. [2024-11-27 20:40:02,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:40:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 515 transitions. [2024-11-27 20:40:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-27 20:40:02,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:40:02,004 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 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 20:40:02,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-27 20:40:02,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 20:40:02,205 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:40:02,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:40:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash 75423774, now seen corresponding path program 44 times [2024-11-27 20:40:02,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:40:02,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998042504] [2024-11-27 20:40:02,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:40:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:40:02,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:40:02,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:40:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2024-11-27 20:40:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:40:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998042504] [2024-11-27 20:40:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998042504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:40:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399314482] [2024-11-27 20:40:02,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:40:02,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:40:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:40:02,983 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:40:02,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-27 20:40:03,275 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:40:03,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:40:03,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 20:40:03,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:40:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2024-11-27 20:40:03,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:40:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2024-11-27 20:40:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399314482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:40:04,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:40:04,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-27 20:40:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549533268] [2024-11-27 20:40:04,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:40:04,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 20:40:04,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:40:04,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 20:40:04,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:40:04,047 INFO L87 Difference]: Start difference. First operand 497 states and 515 transitions. Second operand has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:40:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:40:05,334 INFO L93 Difference]: Finished difference Result 737 states and 763 transitions. [2024-11-27 20:40:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:40:05,335 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2024-11-27 20:40:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:40:05,337 INFO L225 Difference]: With dead ends: 737 [2024-11-27 20:40:05,337 INFO L226 Difference]: Without dead ends: 324 [2024-11-27 20:40:05,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 549 SyntacticMatches, 26 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 20:40:05,339 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 423 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:40:05,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 66 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:40:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-27 20:40:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 314. [2024-11-27 20:40:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.035143769968051) internal successors, (324), 313 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:40:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 324 transitions. [2024-11-27 20:40:05,560 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 324 transitions. Word has length 295 [2024-11-27 20:40:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:40:05,561 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 324 transitions. [2024-11-27 20:40:05,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:40:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 324 transitions. [2024-11-27 20:40:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-27 20:40:05,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:40:05,562 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 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 20:40:05,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-27 20:40:05,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:40:05,762 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:40:05,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:40:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 699589218, now seen corresponding path program 45 times [2024-11-27 20:40:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:40:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044333209] [2024-11-27 20:40:05,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:40:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:40:06,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-27 20:40:06,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:41:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 0 proven. 1715 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:41:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:41:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044333209] [2024-11-27 20:41:10,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044333209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:41:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238324006] [2024-11-27 20:41:10,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:41:10,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:41:10,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:41:10,244 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:41:10,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-27 20:41:11,502 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-27 20:41:11,502 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:41:11,516 WARN L254 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 558 conjuncts are in the unsatisfiable core [2024-11-27 20:41:11,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:41:11,597 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 23 treesize of output 1 [2024-11-27 20:41:11,607 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 23 treesize of output 1 [2024-11-27 20:41:11,695 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 19 treesize of output 1 [2024-11-27 20:41:26,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:41:26,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:41:26,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 86 treesize of output 185 [2024-11-27 20:41:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 25 proven. 1690 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 20:41:27,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:41:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 0 proven. 1803 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 20:41:47,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238324006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:41:47,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:41:47,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 79, 82] total 180 [2024-11-27 20:41:47,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677305451] [2024-11-27 20:41:47,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:41:47,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2024-11-27 20:41:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:41:47,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2024-11-27 20:41:47,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1969, Invalid=30250, Unknown=1, NotChecked=0, Total=32220 [2024-11-27 20:41:47,464 INFO L87 Difference]: Start difference. First operand 314 states and 324 transitions. Second operand has 180 states, 180 states have (on average 4.4) internal successors, (792), 180 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:43:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:43:19,502 INFO L93 Difference]: Finished difference Result 933 states and 1017 transitions. [2024-11-27 20:43:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2024-11-27 20:43:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 4.4) internal successors, (792), 180 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2024-11-27 20:43:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:43:19,507 INFO L225 Difference]: With dead ends: 933 [2024-11-27 20:43:19,507 INFO L226 Difference]: Without dead ends: 927 [2024-11-27 20:43:19,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 568 SyntacticMatches, 50 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38524 ImplicationChecksByTransitivity, 96.2s TimeCoverageRelationStatistics Valid=8594, Invalid=117785, Unknown=1, NotChecked=0, Total=126380 [2024-11-27 20:43:19,518 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 1120 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 26580 mSolverCounterSat, 1862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 28442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1862 IncrementalHoareTripleChecker+Valid, 26580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:43:19,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 382 Invalid, 28442 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1862 Valid, 26580 Invalid, 0 Unknown, 0 Unchecked, 30.8s Time] [2024-11-27 20:43:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-27 20:43:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 854. [2024-11-27 20:43:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.0832356389214537) internal successors, (924), 853 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:43:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 924 transitions. [2024-11-27 20:43:20,073 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 924 transitions. Word has length 313 [2024-11-27 20:43:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:43:20,074 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 924 transitions. [2024-11-27 20:43:20,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 4.4) internal successors, (792), 180 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:43:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 924 transitions. [2024-11-27 20:43:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-27 20:43:20,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:43:20,075 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 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 20:43:20,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-27 20:43:20,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:43:20,276 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:43:20,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:43:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash -350250618, now seen corresponding path program 46 times [2024-11-27 20:43:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:43:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023969302] [2024-11-27 20:43:20,276 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:43:20,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:43:20,327 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:43:20,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:43:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2024-11-27 20:43:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:43:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023969302] [2024-11-27 20:43:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023969302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:43:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836524082] [2024-11-27 20:43:21,037 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:43:21,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:43:21,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:43:21,039 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:43:21,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe25920-ce90-4b85-91c8-1189b0d184c9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-27 20:43:21,316 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:43:21,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:43:21,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:43:21,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:43:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2024-11-27 20:43:21,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:43:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2024-11-27 20:43:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836524082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:43:22,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:43:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 45 [2024-11-27 20:43:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256894347] [2024-11-27 20:43:22,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:43:22,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 20:43:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:43:22,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 20:43:22,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:43:22,231 INFO L87 Difference]: Start difference. First operand 854 states and 924 transitions. Second operand has 45 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 45 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)