./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/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_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:49:36,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:49:36,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:49:36,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:49:36,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:49:36,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:49:36,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:49:36,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:49:36,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:49:36,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:49:36,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:49:36,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:49:36,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:49:36,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:49:36,246 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:49:36,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:49:36,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:49:36,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:49:36,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:49:36,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:49:36,247 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:49:36,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:49:36,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:49:36,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:49:36,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:49:36,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:49:36,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:49:36,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:49:36,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:49:36,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:49:36,249 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_7929f139-39d7-4978-bfef-d03ffb2ab582/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 ! overflow) ) 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 -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 [2024-11-28 04:49:36,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:49:36,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:49:36,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:49:36,554 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:49:36,554 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:49:36,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-11-28 04:49:39,520 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/data/5f35ab800/fe7e5c03a604435a9b6fa5b45d934894/FLAGa34f79414 [2024-11-28 04:49:39,824 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:49:39,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-11-28 04:49:39,844 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/data/5f35ab800/fe7e5c03a604435a9b6fa5b45d934894/FLAGa34f79414 [2024-11-28 04:49:40,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/data/5f35ab800/fe7e5c03a604435a9b6fa5b45d934894 [2024-11-28 04:49:40,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:49:40,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:49:40,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:49:40,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:49:40,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:49:40,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d593a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40, skipping insertion in model container [2024-11-28 04:49:40,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:49:40,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:49:40,380 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:49:40,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:49:40,433 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:49:40,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40 WrapperNode [2024-11-28 04:49:40,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:49:40,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:49:40,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:49:40,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:49:40,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,483 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-11-28 04:49:40,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:49:40,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:49:40,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:49:40,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:49:40,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,535 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 17, 5, 4, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 2, 1]. [2024-11-28 04:49:40,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,547 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:49:40,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:49:40,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:49:40,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:49:40,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (1/1) ... [2024-11-28 04:49:40,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:49:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:40,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:49:40,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:49:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:49:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:49:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:49:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:49:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-11-28 04:49:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-11-28 04:49:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:49:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:49:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:49:40,788 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:49:40,790 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:49:41,452 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-11-28 04:49:41,452 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:49:41,472 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:49:41,472 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:49:41,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:41 BoogieIcfgContainer [2024-11-28 04:49:41,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:49:41,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:49:41,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:49:41,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:49:41,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:40" (1/3) ... [2024-11-28 04:49:41,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d79fb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:41, skipping insertion in model container [2024-11-28 04:49:41,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:40" (2/3) ... [2024-11-28 04:49:41,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d79fb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:41, skipping insertion in model container [2024-11-28 04:49:41,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:41" (3/3) ... [2024-11-28 04:49:41,483 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-11-28 04:49:41,500 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:49:41,502 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps3-ll.c that has 3 procedures, 111 locations, 1 initial locations, 0 loop locations, and 44 error locations. [2024-11-28 04:49:41,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:49:41,595 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;@412f9c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:49:41,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-28 04:49:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:49:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:49:41,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:41,606 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:49:41,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:41,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 893120373, now seen corresponding path program 1 times [2024-11-28 04:49:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500576999] [2024-11-28 04:49:41,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:41,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:42,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:42,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500576999] [2024-11-28 04:49:42,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500576999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:42,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:42,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:42,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849171743] [2024-11-28 04:49:42,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:42,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:42,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:42,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:42,299 INFO L87 Difference]: Start difference. First operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:42,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:42,555 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2024-11-28 04:49:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:49:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:42,566 INFO L225 Difference]: With dead ends: 276 [2024-11-28 04:49:42,566 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 04:49:42,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:42,578 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 137 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:42,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 472 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:42,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 04:49:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2024-11-28 04:49:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 122 states have internal predecessors, (139), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2024-11-28 04:49:42,635 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 6 [2024-11-28 04:49:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:42,636 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2024-11-28 04:49:42,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2024-11-28 04:49:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:49:42,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:42,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:49:42,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:42,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash -704778089, now seen corresponding path program 1 times [2024-11-28 04:49:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:42,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499397502] [2024-11-28 04:49:42,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499397502] [2024-11-28 04:49:42,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499397502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:42,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:42,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010916914] [2024-11-28 04:49:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:42,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:42,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:42,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:42,900 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:43,235 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2024-11-28 04:49:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:43,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:49:43,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:43,240 INFO L225 Difference]: With dead ends: 186 [2024-11-28 04:49:43,240 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 04:49:43,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:43,242 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 131 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:43,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 386 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:49:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 04:49:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2024-11-28 04:49:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.705128205128205) internal successors, (133), 122 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2024-11-28 04:49:43,268 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 8 [2024-11-28 04:49:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:43,269 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2024-11-28 04:49:43,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2024-11-28 04:49:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:49:43,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:43,272 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:43,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:49:43,272 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:43,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:43,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1226667005, now seen corresponding path program 1 times [2024-11-28 04:49:43,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:43,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136953977] [2024-11-28 04:49:43,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:43,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:43,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:43,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136953977] [2024-11-28 04:49:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136953977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:43,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:49:43,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667198475] [2024-11-28 04:49:43,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:43,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:49:43,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:43,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:49:43,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:43,649 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:43,934 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2024-11-28 04:49:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 04:49:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:43,936 INFO L225 Difference]: With dead ends: 156 [2024-11-28 04:49:43,937 INFO L226 Difference]: Without dead ends: 155 [2024-11-28 04:49:43,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:43,939 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 123 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:43,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 441 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-28 04:49:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2024-11-28 04:49:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 122 states have internal predecessors, (132), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2024-11-28 04:49:43,958 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 14 [2024-11-28 04:49:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:43,958 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2024-11-28 04:49:43,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2024-11-28 04:49:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:49:43,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:43,963 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:43,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:49:43,963 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:43,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash -628028410, now seen corresponding path program 1 times [2024-11-28 04:49:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:43,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422259967] [2024-11-28 04:49:43,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:44,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162815290] [2024-11-28 04:49:44,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:44,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:44,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:44,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:44,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:49:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:44,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:49:44,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:44,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:44,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:44,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:44,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422259967] [2024-11-28 04:49:44,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:44,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162815290] [2024-11-28 04:49:44,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162815290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:44,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:44,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:49:44,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101056743] [2024-11-28 04:49:44,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:44,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:49:44,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:44,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:49:44,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:44,424 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:44,725 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2024-11-28 04:49:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 04:49:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:44,727 INFO L225 Difference]: With dead ends: 147 [2024-11-28 04:49:44,727 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 04:49:44,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:44,729 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 107 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:44,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 461 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:44,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 04:49:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2024-11-28 04:49:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 122 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2024-11-28 04:49:44,739 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 15 [2024-11-28 04:49:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:44,739 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2024-11-28 04:49:44,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2024-11-28 04:49:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:49:44,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:44,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:44,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:49:44,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:44,945 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:44,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2005955871, now seen corresponding path program 1 times [2024-11-28 04:49:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:44,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596578200] [2024-11-28 04:49:44,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:44,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:45,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596578200] [2024-11-28 04:49:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596578200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:45,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494060749] [2024-11-28 04:49:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:45,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:45,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:45,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:45,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:45,137 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:45,355 INFO L93 Difference]: Finished difference Result 178 states and 181 transitions. [2024-11-28 04:49:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:45,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:49:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:45,357 INFO L225 Difference]: With dead ends: 178 [2024-11-28 04:49:45,358 INFO L226 Difference]: Without dead ends: 174 [2024-11-28 04:49:45,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:45,359 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 99 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:45,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 399 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-28 04:49:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 129. [2024-11-28 04:49:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 122 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 136 transitions. [2024-11-28 04:49:45,376 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 136 transitions. Word has length 16 [2024-11-28 04:49:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:45,377 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 136 transitions. [2024-11-28 04:49:45,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2024-11-28 04:49:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:49:45,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:45,377 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] [2024-11-28 04:49:45,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:49:45,378 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:45,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1573701789, now seen corresponding path program 1 times [2024-11-28 04:49:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:45,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915121661] [2024-11-28 04:49:45,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:45,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:45,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060774868] [2024-11-28 04:49:45,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:45,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:45,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:45,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:49:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:45,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:49:45,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:45,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:45,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:45,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915121661] [2024-11-28 04:49:45,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060774868] [2024-11-28 04:49:45,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060774868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:45,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:45,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:49:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757378466] [2024-11-28 04:49:45,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:45,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:49:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:45,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:49:45,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:45,777 INFO L87 Difference]: Start difference. First operand 129 states and 136 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:46,208 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2024-11-28 04:49:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:49:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 04:49:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:46,209 INFO L225 Difference]: With dead ends: 142 [2024-11-28 04:49:46,210 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 04:49:46,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:49:46,211 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 88 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:46,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 517 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:49:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 04:49:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 129. [2024-11-28 04:49:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6153846153846154) internal successors, (126), 122 states have internal predecessors, (126), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2024-11-28 04:49:46,220 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 20 [2024-11-28 04:49:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:46,220 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2024-11-28 04:49:46,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2024-11-28 04:49:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:49:46,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:46,221 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] [2024-11-28 04:49:46,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:46,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:46,426 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:46,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1540115092, now seen corresponding path program 1 times [2024-11-28 04:49:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:46,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588788240] [2024-11-28 04:49:46,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:46,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926242624] [2024-11-28 04:49:46,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:46,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:46,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:46,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:46,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:49:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:46,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:49:46,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:46,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:46,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:46,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:46,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:46,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588788240] [2024-11-28 04:49:46,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:46,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926242624] [2024-11-28 04:49:46,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926242624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:46,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:46,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:49:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320105136] [2024-11-28 04:49:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:46,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:49:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:46,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:49:46,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:46,800 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:47,175 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2024-11-28 04:49:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:49:47,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:49:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:47,177 INFO L225 Difference]: With dead ends: 141 [2024-11-28 04:49:47,177 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 04:49:47,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:49:47,178 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 84 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:47,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 519 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:49:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 04:49:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2024-11-28 04:49:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 122 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2024-11-28 04:49:47,186 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 21 [2024-11-28 04:49:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:47,187 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2024-11-28 04:49:47,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2024-11-28 04:49:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:49:47,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:47,188 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] [2024-11-28 04:49:47,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:49:47,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:47,392 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:47,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -498927483, now seen corresponding path program 1 times [2024-11-28 04:49:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446927180] [2024-11-28 04:49:47,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446927180] [2024-11-28 04:49:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446927180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:47,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:49:47,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824122267] [2024-11-28 04:49:47,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:47,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:49:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:47,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:49:47,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:47,661 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:47,929 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2024-11-28 04:49:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:47,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-28 04:49:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:47,931 INFO L225 Difference]: With dead ends: 172 [2024-11-28 04:49:47,931 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 04:49:47,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:47,932 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 84 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:47,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 405 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 04:49:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 129. [2024-11-28 04:49:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 122 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2024-11-28 04:49:47,941 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 22 [2024-11-28 04:49:47,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:47,941 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2024-11-28 04:49:47,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:47,941 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2024-11-28 04:49:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:49:47,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:47,942 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] [2024-11-28 04:49:47,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:49:47,942 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:47,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1713117326, now seen corresponding path program 1 times [2024-11-28 04:49:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813209439] [2024-11-28 04:49:47,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:47,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813209439] [2024-11-28 04:49:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813209439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378874050] [2024-11-28 04:49:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:48,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:48,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:48,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:48,176 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:48,392 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-11-28 04:49:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 04:49:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:48,393 INFO L225 Difference]: With dead ends: 171 [2024-11-28 04:49:48,394 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 04:49:48,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:48,395 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 78 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:48,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 398 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 04:49:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2024-11-28 04:49:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-11-28 04:49:48,403 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 23 [2024-11-28 04:49:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:48,403 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-11-28 04:49:48,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-11-28 04:49:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:49:48,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:48,404 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] [2024-11-28 04:49:48,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:49:48,405 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:48,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1343546903, now seen corresponding path program 1 times [2024-11-28 04:49:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:48,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098073252] [2024-11-28 04:49:48,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:48,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:48,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:48,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098073252] [2024-11-28 04:49:48,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098073252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:48,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:48,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:49:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425903287] [2024-11-28 04:49:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:48,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:49:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:48,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:49:48,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:48,705 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:48,813 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-11-28 04:49:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-28 04:49:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:48,816 INFO L225 Difference]: With dead ends: 170 [2024-11-28 04:49:48,816 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 04:49:48,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:48,817 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:48,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 499 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 04:49:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 130. [2024-11-28 04:49:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 123 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2024-11-28 04:49:48,832 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 31 [2024-11-28 04:49:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:48,833 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2024-11-28 04:49:48,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2024-11-28 04:49:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 04:49:48,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:48,834 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] [2024-11-28 04:49:48,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:49:48,834 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:48,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1299718842, now seen corresponding path program 1 times [2024-11-28 04:49:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340978434] [2024-11-28 04:49:48,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340978434] [2024-11-28 04:49:49,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340978434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:49,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:49:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699758237] [2024-11-28 04:49:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:49,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:49:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:49,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:49:49,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:49,113 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:49,218 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2024-11-28 04:49:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-28 04:49:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:49,222 INFO L225 Difference]: With dead ends: 130 [2024-11-28 04:49:49,222 INFO L226 Difference]: Without dead ends: 129 [2024-11-28 04:49:49,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:49,224 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 130 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:49,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 416 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-28 04:49:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-28 04:49:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-11-28 04:49:49,238 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 32 [2024-11-28 04:49:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:49,239 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-11-28 04:49:49,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-11-28 04:49:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:49:49,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:49,241 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] [2024-11-28 04:49:49,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:49:49,241 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:49,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1636578311, now seen corresponding path program 1 times [2024-11-28 04:49:49,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:49,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860678654] [2024-11-28 04:49:49,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:49,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:49,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860678654] [2024-11-28 04:49:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860678654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:49,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:49,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805624642] [2024-11-28 04:49:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:49,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:49,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:49,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:49,456 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:49,598 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2024-11-28 04:49:49,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:49,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-28 04:49:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:49,601 INFO L225 Difference]: With dead ends: 167 [2024-11-28 04:49:49,601 INFO L226 Difference]: Without dead ends: 165 [2024-11-28 04:49:49,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:49,602 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 64 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:49,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 424 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-28 04:49:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2024-11-28 04:49:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 125 states have internal predecessors, (126), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:49:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2024-11-28 04:49:49,613 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 33 [2024-11-28 04:49:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:49,614 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2024-11-28 04:49:49,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2024-11-28 04:49:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 04:49:49,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:49,618 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] [2024-11-28 04:49:49,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:49:49,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:49,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash 805349363, now seen corresponding path program 1 times [2024-11-28 04:49:49,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:49,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705956302] [2024-11-28 04:49:49,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:49,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:49,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:49,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705956302] [2024-11-28 04:49:49,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705956302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:49,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:49,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:49:49,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610381067] [2024-11-28 04:49:49,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:49,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:49:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:49,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:49:49,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:49:49,804 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:49,949 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2024-11-28 04:49:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:49:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-28 04:49:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:49,951 INFO L225 Difference]: With dead ends: 165 [2024-11-28 04:49:49,952 INFO L226 Difference]: Without dead ends: 163 [2024-11-28 04:49:49,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:49:49,954 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 63 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:49,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 263 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-28 04:49:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 137. [2024-11-28 04:49:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 128 states have internal predecessors, (130), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:49:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2024-11-28 04:49:49,967 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 34 [2024-11-28 04:49:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:49,967 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2024-11-28 04:49:49,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2024-11-28 04:49:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:49:49,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:49,970 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] [2024-11-28 04:49:49,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:49:49,970 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:49,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash -793722405, now seen corresponding path program 1 times [2024-11-28 04:49:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135527846] [2024-11-28 04:49:49,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:49,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718857910] [2024-11-28 04:49:50,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:50,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:50,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:50,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:50,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:49:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:50,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:49:50,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:50,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:50,355 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135527846] [2024-11-28 04:49:50,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718857910] [2024-11-28 04:49:50,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718857910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:50,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:49:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863593727] [2024-11-28 04:49:50,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:50,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:49:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:50,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:49:50,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:50,358 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:50,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:50,563 INFO L93 Difference]: Finished difference Result 178 states and 182 transitions. [2024-11-28 04:49:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:49:50,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-28 04:49:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:50,565 INFO L225 Difference]: With dead ends: 178 [2024-11-28 04:49:50,565 INFO L226 Difference]: Without dead ends: 177 [2024-11-28 04:49:50,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:50,566 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 96 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:50,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 435 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-28 04:49:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 142. [2024-11-28 04:49:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 90 states have (on average 1.488888888888889) internal successors, (134), 132 states have internal predecessors, (134), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:49:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2024-11-28 04:49:50,575 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 35 [2024-11-28 04:49:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:50,576 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2024-11-28 04:49:50,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2024-11-28 04:49:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 04:49:50,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:50,577 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] [2024-11-28 04:49:50,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:49:50,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:49:50,781 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:50,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash 846625781, now seen corresponding path program 1 times [2024-11-28 04:49:50,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:50,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016057439] [2024-11-28 04:49:50,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:50,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:50,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:50,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016057439] [2024-11-28 04:49:50,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016057439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:50,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:50,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:49:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124686897] [2024-11-28 04:49:50,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:50,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:49:50,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:50,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:49:50,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:49:50,938 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:51,121 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2024-11-28 04:49:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:51,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-28 04:49:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:51,123 INFO L225 Difference]: With dead ends: 172 [2024-11-28 04:49:51,123 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 04:49:51,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:51,124 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 69 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:51,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 243 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 04:49:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 148. [2024-11-28 04:49:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 138 states have internal predecessors, (140), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:49:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2024-11-28 04:49:51,137 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 36 [2024-11-28 04:49:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:51,141 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2024-11-28 04:49:51,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2024-11-28 04:49:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 04:49:51,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:51,141 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] [2024-11-28 04:49:51,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:49:51,142 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:51,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:51,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1164409354, now seen corresponding path program 1 times [2024-11-28 04:49:51,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:51,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792060623] [2024-11-28 04:49:51,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:51,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173962691] [2024-11-28 04:49:51,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:51,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:51,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:51,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:49:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:51,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:49:51,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:51,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:51,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792060623] [2024-11-28 04:49:51,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173962691] [2024-11-28 04:49:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173962691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:51,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:51,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:49:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985694520] [2024-11-28 04:49:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:51,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:49:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:51,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:49:51,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:51,462 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:51,663 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2024-11-28 04:49:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:49:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 04:49:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:51,665 INFO L225 Difference]: With dead ends: 172 [2024-11-28 04:49:51,665 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 04:49:51,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:51,666 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 59 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:51,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 492 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 04:49:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2024-11-28 04:49:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.4536082474226804) internal successors, (141), 139 states have internal predecessors, (141), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:49:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2024-11-28 04:49:51,677 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 36 [2024-11-28 04:49:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:51,677 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2024-11-28 04:49:51,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2024-11-28 04:49:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:49:51,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:51,678 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] [2024-11-28 04:49:51,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:51,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:49:51,879 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:51,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1736951741, now seen corresponding path program 1 times [2024-11-28 04:49:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429259112] [2024-11-28 04:49:51,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:52,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429259112] [2024-11-28 04:49:52,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429259112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:52,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:52,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:49:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341382802] [2024-11-28 04:49:52,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:52,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:49:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:52,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:49:52,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:52,133 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:52,322 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2024-11-28 04:49:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:52,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-28 04:49:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:52,324 INFO L225 Difference]: With dead ends: 153 [2024-11-28 04:49:52,324 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 04:49:52,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:49:52,325 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 40 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:52,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 491 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 04:49:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2024-11-28 04:49:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 140 states have internal predecessors, (142), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:49:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2024-11-28 04:49:52,337 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 37 [2024-11-28 04:49:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:52,337 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2024-11-28 04:49:52,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2024-11-28 04:49:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:49:52,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:52,339 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] [2024-11-28 04:49:52,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:49:52,339 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:52,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1989070740, now seen corresponding path program 1 times [2024-11-28 04:49:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:52,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128875282] [2024-11-28 04:49:52,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128875282] [2024-11-28 04:49:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128875282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:52,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501851413] [2024-11-28 04:49:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:52,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:52,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:52,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:52,627 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:52,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:52,799 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2024-11-28 04:49:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:52,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-11-28 04:49:52,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:52,801 INFO L225 Difference]: With dead ends: 152 [2024-11-28 04:49:52,801 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 04:49:52,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:52,802 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 35 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:52,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 470 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 04:49:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-28 04:49:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 141 states have internal predecessors, (143), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:49:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2024-11-28 04:49:52,812 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 38 [2024-11-28 04:49:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:52,812 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2024-11-28 04:49:52,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:49:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2024-11-28 04:49:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:49:52,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:52,813 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] [2024-11-28 04:49:52,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:49:52,813 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:52,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 328560985, now seen corresponding path program 1 times [2024-11-28 04:49:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050980729] [2024-11-28 04:49:52,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:52,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888172689] [2024-11-28 04:49:52,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:52,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:52,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:52,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:52,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:49:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:52,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 04:49:52,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:52,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:52,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:53,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:49:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:53,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:53,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050980729] [2024-11-28 04:49:53,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:53,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888172689] [2024-11-28 04:49:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888172689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:53,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:49:53,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2024-11-28 04:49:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485389788] [2024-11-28 04:49:53,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:53,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:49:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:53,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:49:53,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:49:53,847 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:55,213 INFO L93 Difference]: Finished difference Result 232 states and 239 transitions. [2024-11-28 04:49:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:49:55,213 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-28 04:49:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:55,215 INFO L225 Difference]: With dead ends: 232 [2024-11-28 04:49:55,215 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 04:49:55,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:49:55,216 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 463 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:55,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 908 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:49:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 04:49:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 184. [2024-11-28 04:49:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 170 states have internal predecessors, (191), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-28 04:49:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2024-11-28 04:49:55,229 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 42 [2024-11-28 04:49:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:55,229 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2024-11-28 04:49:55,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2024-11-28 04:49:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:49:55,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:55,230 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] [2024-11-28 04:49:55,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:49:55,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:55,431 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:55,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1963841541, now seen corresponding path program 1 times [2024-11-28 04:49:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:55,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934685099] [2024-11-28 04:49:55,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:55,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:55,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:55,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934685099] [2024-11-28 04:49:55,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934685099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:55,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:55,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710841358] [2024-11-28 04:49:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:55,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:55,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:55,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:55,583 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:55,737 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2024-11-28 04:49:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:49:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-28 04:49:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:55,740 INFO L225 Difference]: With dead ends: 199 [2024-11-28 04:49:55,740 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:49:55,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:55,741 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 60 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:55,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 260 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:49:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2024-11-28 04:49:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 130 states have (on average 1.476923076923077) internal successors, (192), 171 states have internal predecessors, (192), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-28 04:49:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 210 transitions. [2024-11-28 04:49:55,754 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 210 transitions. Word has length 42 [2024-11-28 04:49:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:55,755 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 210 transitions. [2024-11-28 04:49:55,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 210 transitions. [2024-11-28 04:49:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:49:55,756 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:55,756 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] [2024-11-28 04:49:55,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:49:55,756 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:55,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -749545573, now seen corresponding path program 1 times [2024-11-28 04:49:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190802109] [2024-11-28 04:49:55,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:49:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307297672] [2024-11-28 04:49:55,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:55,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:55,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:55,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:49:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:55,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:49:55,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:55,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:55,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:56,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190802109] [2024-11-28 04:49:56,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307297672] [2024-11-28 04:49:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307297672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866639314] [2024-11-28 04:49:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:56,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:56,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:56,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:56,120 INFO L87 Difference]: Start difference. First operand 185 states and 210 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:56,326 INFO L93 Difference]: Finished difference Result 199 states and 227 transitions. [2024-11-28 04:49:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-28 04:49:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:56,329 INFO L225 Difference]: With dead ends: 199 [2024-11-28 04:49:56,329 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:49:56,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:56,330 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 53 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:56,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 292 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:49:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 186. [2024-11-28 04:49:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 131 states have (on average 1.4732824427480915) internal successors, (193), 172 states have internal predecessors, (193), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-28 04:49:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2024-11-28 04:49:56,345 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 43 [2024-11-28 04:49:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:56,345 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2024-11-28 04:49:56,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2024-11-28 04:49:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:49:56,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:56,346 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:56,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:49:56,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:49:56,551 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:56,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2080470661, now seen corresponding path program 1 times [2024-11-28 04:49:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:56,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626567479] [2024-11-28 04:49:56,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:56,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626567479] [2024-11-28 04:49:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626567479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383099702] [2024-11-28 04:49:56,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:56,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:56,899 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:56,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:49:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:57,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:49:57,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:57,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:57,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:49:57,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:49:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:57,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383099702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:57,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2024-11-28 04:49:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933759282] [2024-11-28 04:49:57,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:57,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:49:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:57,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:49:57,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:49:57,413 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand has 18 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:49:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:58,197 INFO L93 Difference]: Finished difference Result 219 states and 226 transitions. [2024-11-28 04:49:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:49:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-11-28 04:49:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:58,199 INFO L225 Difference]: With dead ends: 219 [2024-11-28 04:49:58,199 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 04:49:58,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:49:58,201 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 389 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:58,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 781 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:49:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 04:49:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 184. [2024-11-28 04:49:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 170 states have internal predecessors, (189), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-28 04:49:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2024-11-28 04:49:58,214 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 44 [2024-11-28 04:49:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:58,214 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2024-11-28 04:49:58,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:49:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2024-11-28 04:49:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:49:58,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:58,216 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] [2024-11-28 04:49:58,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:58,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:49:58,417 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:58,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1761076227, now seen corresponding path program 1 times [2024-11-28 04:49:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972194891] [2024-11-28 04:49:58,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:58,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972194891] [2024-11-28 04:49:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972194891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920372337] [2024-11-28 04:49:58,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:58,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:49:58,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:58,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:49:58,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:58,557 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:58,770 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2024-11-28 04:49:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:58,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-28 04:49:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:58,772 INFO L225 Difference]: With dead ends: 198 [2024-11-28 04:49:58,772 INFO L226 Difference]: Without dead ends: 197 [2024-11-28 04:49:58,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:49:58,773 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 43 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:58,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 280 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:49:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-28 04:49:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2024-11-28 04:49:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 132 states have (on average 1.4393939393939394) internal successors, (190), 171 states have internal predecessors, (190), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-28 04:49:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 208 transitions. [2024-11-28 04:49:58,786 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 208 transitions. Word has length 44 [2024-11-28 04:49:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:58,786 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 208 transitions. [2024-11-28 04:49:58,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:49:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 208 transitions. [2024-11-28 04:49:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:49:58,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:58,787 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:58,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:49:58,787 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:49:58,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:58,788 INFO L85 PathProgramCache]: Analyzing trace with hash -70080964, now seen corresponding path program 1 times [2024-11-28 04:49:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:58,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144141170] [2024-11-28 04:49:58,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:59,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144141170] [2024-11-28 04:49:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144141170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495354] [2024-11-28 04:49:59,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:59,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:59,112 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:59,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:49:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:59,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:49:59,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:59,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:49:59,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:49:59,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:49:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:59,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:59,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2024-11-28 04:49:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824180068] [2024-11-28 04:49:59,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:59,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:49:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:59,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:49:59,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:49:59,587 INFO L87 Difference]: Start difference. First operand 185 states and 208 transitions. Second operand has 18 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:50:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:00,314 INFO L93 Difference]: Finished difference Result 270 states and 279 transitions. [2024-11-28 04:50:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:50:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2024-11-28 04:50:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:00,316 INFO L225 Difference]: With dead ends: 270 [2024-11-28 04:50:00,316 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 04:50:00,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:50:00,318 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 447 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:00,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 665 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:50:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 04:50:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 216. [2024-11-28 04:50:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 159 states have (on average 1.4654088050314464) internal successors, (233), 199 states have internal predecessors, (233), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions. [2024-11-28 04:50:00,337 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 45 [2024-11-28 04:50:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:00,337 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 257 transitions. [2024-11-28 04:50:00,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:50:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions. [2024-11-28 04:50:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:50:00,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:00,338 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] [2024-11-28 04:50:00,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:50:00,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:00,542 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:00,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1241211869, now seen corresponding path program 1 times [2024-11-28 04:50:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388749970] [2024-11-28 04:50:00,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388749970] [2024-11-28 04:50:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388749970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:00,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:00,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:50:00,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824998589] [2024-11-28 04:50:00,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:00,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:50:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:00,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:50:00,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:50:00,706 INFO L87 Difference]: Start difference. First operand 216 states and 257 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:00,860 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2024-11-28 04:50:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:50:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-28 04:50:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:00,862 INFO L225 Difference]: With dead ends: 228 [2024-11-28 04:50:00,862 INFO L226 Difference]: Without dead ends: 227 [2024-11-28 04:50:00,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:50:00,863 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 49 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:00,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 226 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-28 04:50:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 217. [2024-11-28 04:50:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 160 states have (on average 1.4625) internal successors, (234), 200 states have internal predecessors, (234), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 258 transitions. [2024-11-28 04:50:00,880 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 258 transitions. Word has length 45 [2024-11-28 04:50:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:00,881 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 258 transitions. [2024-11-28 04:50:00,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 258 transitions. [2024-11-28 04:50:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:50:00,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:00,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:00,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:50:00,882 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:00,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2122457501, now seen corresponding path program 1 times [2024-11-28 04:50:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786187510] [2024-11-28 04:50:00,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044409760] [2024-11-28 04:50:00,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:00,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:00,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:00,910 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:00,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:50:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:01,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:50:01,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:01,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:01,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:01,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786187510] [2024-11-28 04:50:01,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044409760] [2024-11-28 04:50:01,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044409760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:01,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:01,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:50:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667325916] [2024-11-28 04:50:01,926 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:01,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:50:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:01,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:50:01,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:50:01,928 INFO L87 Difference]: Start difference. First operand 217 states and 258 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:02,394 INFO L93 Difference]: Finished difference Result 244 states and 269 transitions. [2024-11-28 04:50:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:50:02,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-28 04:50:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:02,396 INFO L225 Difference]: With dead ends: 244 [2024-11-28 04:50:02,396 INFO L226 Difference]: Without dead ends: 243 [2024-11-28 04:50:02,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:50:02,397 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 171 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:02,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 648 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:50:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-28 04:50:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 217. [2024-11-28 04:50:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 160 states have (on average 1.45625) internal successors, (233), 200 states have internal predecessors, (233), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2024-11-28 04:50:02,412 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 46 [2024-11-28 04:50:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:02,412 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2024-11-28 04:50:02,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2024-11-28 04:50:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:50:02,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:02,413 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] [2024-11-28 04:50:02,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:02,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:02,618 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:02,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash -177137665, now seen corresponding path program 1 times [2024-11-28 04:50:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531664080] [2024-11-28 04:50:02,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:02,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430562097] [2024-11-28 04:50:02,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:02,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:02,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:02,646 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:02,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:50:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:02,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:50:02,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:02,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:02,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531664080] [2024-11-28 04:50:02,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430562097] [2024-11-28 04:50:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430562097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:02,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:02,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:50:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547166025] [2024-11-28 04:50:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:02,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:50:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:02,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:50:02,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:50:02,862 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:02,988 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2024-11-28 04:50:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:50:02,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-28 04:50:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:02,990 INFO L225 Difference]: With dead ends: 227 [2024-11-28 04:50:02,990 INFO L226 Difference]: Without dead ends: 225 [2024-11-28 04:50:02,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:50:02,990 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 38 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:02,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 243 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-28 04:50:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2024-11-28 04:50:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 162 states have (on average 1.4506172839506173) internal successors, (235), 202 states have internal predecessors, (235), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2024-11-28 04:50:03,005 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 46 [2024-11-28 04:50:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:03,005 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2024-11-28 04:50:03,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2024-11-28 04:50:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:50:03,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:03,006 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:03,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:50:03,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:03,206 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:03,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:03,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1371673182, now seen corresponding path program 1 times [2024-11-28 04:50:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:03,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012154641] [2024-11-28 04:50:03,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:03,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872441866] [2024-11-28 04:50:03,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:03,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:03,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:03,234 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:03,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:50:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:03,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:50:03,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:03,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:03,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:03,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:05,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012154641] [2024-11-28 04:50:05,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:05,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872441866] [2024-11-28 04:50:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872441866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:05,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:50:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395199927] [2024-11-28 04:50:05,801 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:05,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:50:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:05,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:50:05,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-28 04:50:05,802 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:06,259 INFO L93 Difference]: Finished difference Result 241 states and 266 transitions. [2024-11-28 04:50:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:50:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-28 04:50:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:06,261 INFO L225 Difference]: With dead ends: 241 [2024-11-28 04:50:06,261 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 04:50:06,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-28 04:50:06,262 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 183 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:06,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 486 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:50:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 04:50:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 219. [2024-11-28 04:50:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 202 states have internal predecessors, (234), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 258 transitions. [2024-11-28 04:50:06,281 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 258 transitions. Word has length 47 [2024-11-28 04:50:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:06,282 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 258 transitions. [2024-11-28 04:50:06,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 258 transitions. [2024-11-28 04:50:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:50:06,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:06,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:06,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:50:06,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:50:06,486 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:06,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash -427804225, now seen corresponding path program 1 times [2024-11-28 04:50:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395686488] [2024-11-28 04:50:06,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466219941] [2024-11-28 04:50:06,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:06,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:06,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:06,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:50:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:06,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:50:06,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:06,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:06,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:06,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:16,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:16,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395686488] [2024-11-28 04:50:16,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:16,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466219941] [2024-11-28 04:50:16,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466219941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:16,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:16,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:50:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046378383] [2024-11-28 04:50:16,011 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:16,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:50:16,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:16,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:50:16,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=385, Unknown=2, NotChecked=0, Total=462 [2024-11-28 04:50:16,013 INFO L87 Difference]: Start difference. First operand 219 states and 258 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:16,533 INFO L93 Difference]: Finished difference Result 240 states and 265 transitions. [2024-11-28 04:50:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:50:16,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-28 04:50:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:16,535 INFO L225 Difference]: With dead ends: 240 [2024-11-28 04:50:16,535 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 04:50:16,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=146, Invalid=608, Unknown=2, NotChecked=0, Total=756 [2024-11-28 04:50:16,536 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 174 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:16,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 686 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:50:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 04:50:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2024-11-28 04:50:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 162 states have (on average 1.4382716049382716) internal successors, (233), 202 states have internal predecessors, (233), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 257 transitions. [2024-11-28 04:50:16,549 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 257 transitions. Word has length 48 [2024-11-28 04:50:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:16,550 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 257 transitions. [2024-11-28 04:50:16,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 257 transitions. [2024-11-28 04:50:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:50:16,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:16,551 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] [2024-11-28 04:50:16,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:16,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:50:16,755 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:16,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1569397761, now seen corresponding path program 1 times [2024-11-28 04:50:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:16,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50580731] [2024-11-28 04:50:16,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887258095] [2024-11-28 04:50:16,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:16,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:16,786 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:16,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:50:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:16,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:50:16,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:16,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:16,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:17,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:17,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:17,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50580731] [2024-11-28 04:50:17,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:17,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887258095] [2024-11-28 04:50:17,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887258095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:17,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:50:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160701841] [2024-11-28 04:50:17,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:17,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:50:17,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:17,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:50:17,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:50:17,182 INFO L87 Difference]: Start difference. First operand 219 states and 257 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:17,409 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2024-11-28 04:50:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:50:17,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-28 04:50:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:17,412 INFO L225 Difference]: With dead ends: 225 [2024-11-28 04:50:17,413 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 04:50:17,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:50:17,414 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 36 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:17,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 281 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:50:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 04:50:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2024-11-28 04:50:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 164 states have (on average 1.4329268292682926) internal successors, (235), 204 states have internal predecessors, (235), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 259 transitions. [2024-11-28 04:50:17,431 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 259 transitions. Word has length 48 [2024-11-28 04:50:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:17,432 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 259 transitions. [2024-11-28 04:50:17,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 259 transitions. [2024-11-28 04:50:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:50:17,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:17,432 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:17,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:17,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:17,637 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:17,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -377028992, now seen corresponding path program 1 times [2024-11-28 04:50:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803626213] [2024-11-28 04:50:17,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:17,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274671603] [2024-11-28 04:50:17,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:17,671 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:17,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:50:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:17,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:50:17,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:17,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:17,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:18,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:18,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:18,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803626213] [2024-11-28 04:50:18,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:18,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274671603] [2024-11-28 04:50:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274671603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:18,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:18,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:50:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762219950] [2024-11-28 04:50:18,716 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:18,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:50:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:18,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:50:18,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:50:18,717 INFO L87 Difference]: Start difference. First operand 221 states and 259 transitions. Second operand has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:19,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:19,154 INFO L93 Difference]: Finished difference Result 237 states and 262 transitions. [2024-11-28 04:50:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:50:19,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-28 04:50:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:19,156 INFO L225 Difference]: With dead ends: 237 [2024-11-28 04:50:19,156 INFO L226 Difference]: Without dead ends: 236 [2024-11-28 04:50:19,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:50:19,157 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 167 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:19,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 526 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:50:19,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-28 04:50:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 221. [2024-11-28 04:50:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 164 states have (on average 1.4268292682926829) internal successors, (234), 204 states have internal predecessors, (234), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 258 transitions. [2024-11-28 04:50:19,172 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 258 transitions. Word has length 49 [2024-11-28 04:50:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:19,172 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 258 transitions. [2024-11-28 04:50:19,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 258 transitions. [2024-11-28 04:50:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:50:19,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:19,177 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:19,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:19,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:19,378 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:19,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1197003233, now seen corresponding path program 1 times [2024-11-28 04:50:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169142333] [2024-11-28 04:50:19,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:19,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606523559] [2024-11-28 04:50:19,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:19,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:19,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:19,410 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:19,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:50:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:19,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 04:50:19,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:19,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:19,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:19,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:19,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:20,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:20,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169142333] [2024-11-28 04:50:20,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:20,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606523559] [2024-11-28 04:50:20,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606523559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:20,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:50:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-11-28 04:50:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290803761] [2024-11-28 04:50:20,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:20,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:50:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:20,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:50:20,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:50:20,801 INFO L87 Difference]: Start difference. First operand 221 states and 258 transitions. Second operand has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:24,045 INFO L93 Difference]: Finished difference Result 256 states and 267 transitions. [2024-11-28 04:50:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 04:50:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-28 04:50:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:24,047 INFO L225 Difference]: With dead ends: 256 [2024-11-28 04:50:24,047 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 04:50:24,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:50:24,048 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 460 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:24,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1137 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:50:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 04:50:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 221. [2024-11-28 04:50:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 164 states have (on average 1.4085365853658536) internal successors, (231), 204 states have internal predecessors, (231), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 255 transitions. [2024-11-28 04:50:24,064 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 255 transitions. Word has length 50 [2024-11-28 04:50:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:24,065 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 255 transitions. [2024-11-28 04:50:24,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 255 transitions. [2024-11-28 04:50:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:50:24,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:24,065 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, 1] [2024-11-28 04:50:24,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:50:24,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:24,266 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:24,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash 657729539, now seen corresponding path program 1 times [2024-11-28 04:50:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669988093] [2024-11-28 04:50:24,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669988093] [2024-11-28 04:50:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669988093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:50:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15947198] [2024-11-28 04:50:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:24,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:50:24,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:24,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:50:24,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:50:24,455 INFO L87 Difference]: Start difference. First operand 221 states and 255 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:24,682 INFO L93 Difference]: Finished difference Result 224 states and 258 transitions. [2024-11-28 04:50:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:50:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-28 04:50:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:24,684 INFO L225 Difference]: With dead ends: 224 [2024-11-28 04:50:24,684 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 04:50:24,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:50:24,685 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 26 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:24,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 278 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:50:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 04:50:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2024-11-28 04:50:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 165 states have (on average 1.406060606060606) internal successors, (232), 205 states have internal predecessors, (232), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 04:50:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 256 transitions. [2024-11-28 04:50:24,700 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 256 transitions. Word has length 50 [2024-11-28 04:50:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:24,700 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 256 transitions. [2024-11-28 04:50:24,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 256 transitions. [2024-11-28 04:50:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:50:24,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:24,701 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, 1, 1] [2024-11-28 04:50:24,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:50:24,702 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:24,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1085220701, now seen corresponding path program 1 times [2024-11-28 04:50:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875757994] [2024-11-28 04:50:24,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:24,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875757994] [2024-11-28 04:50:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875757994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:24,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:50:24,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037573783] [2024-11-28 04:50:24,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:24,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:50:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:24,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:50:24,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:50:24,861 INFO L87 Difference]: Start difference. First operand 222 states and 256 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:25,057 INFO L93 Difference]: Finished difference Result 224 states and 257 transitions. [2024-11-28 04:50:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:50:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-28 04:50:25,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:25,059 INFO L225 Difference]: With dead ends: 224 [2024-11-28 04:50:25,059 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 04:50:25,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:50:25,060 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 25 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:25,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 290 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:50:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 04:50:25,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-28 04:50:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 146 states have (on average 1.452054794520548) internal successors, (212), 186 states have internal predecessors, (212), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2024-11-28 04:50:25,073 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 51 [2024-11-28 04:50:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:25,073 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2024-11-28 04:50:25,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2024-11-28 04:50:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:50:25,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:25,074 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:25,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:50:25,075 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:25,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -731125245, now seen corresponding path program 1 times [2024-11-28 04:50:25,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:25,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231914176] [2024-11-28 04:50:25,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:25,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231914176] [2024-11-28 04:50:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231914176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520657397] [2024-11-28 04:50:25,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:25,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:25,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:25,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:25,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:50:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:25,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:50:25,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:25,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-28 04:50:25,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:50:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:25,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520657397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:25,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-28 04:50:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816513346] [2024-11-28 04:50:25,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:25,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:50:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:25,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:50:25,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:50:25,972 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:50:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:26,501 INFO L93 Difference]: Finished difference Result 202 states and 235 transitions. [2024-11-28 04:50:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:50:26,502 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-28 04:50:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:26,503 INFO L225 Difference]: With dead ends: 202 [2024-11-28 04:50:26,503 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 04:50:26,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:50:26,504 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 271 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:26,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 592 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:50:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 04:50:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-28 04:50:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 146 states have (on average 1.4315068493150684) internal successors, (209), 185 states have internal predecessors, (209), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 232 transitions. [2024-11-28 04:50:26,521 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 232 transitions. Word has length 52 [2024-11-28 04:50:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:26,521 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 232 transitions. [2024-11-28 04:50:26,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:50:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 232 transitions. [2024-11-28 04:50:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:50:26,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:26,522 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:50:26,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:50:26,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:50:26,723 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:26,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1190046012, now seen corresponding path program 1 times [2024-11-28 04:50:26,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:26,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783038874] [2024-11-28 04:50:26,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:27,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:27,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783038874] [2024-11-28 04:50:27,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783038874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:27,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039105865] [2024-11-28 04:50:27,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:27,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:27,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:27,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:50:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:27,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:50:27,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:27,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:27,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:50:27,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:50:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:27,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039105865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:27,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-28 04:50:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923419420] [2024-11-28 04:50:27,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:27,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:50:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:27,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:50:27,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:50:27,566 INFO L87 Difference]: Start difference. First operand 201 states and 232 transitions. Second operand has 19 states, 16 states have (on average 6.8125) internal successors, (109), 15 states have internal predecessors, (109), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:50:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:28,081 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-11-28 04:50:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:50:28,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.8125) internal successors, (109), 15 states have internal predecessors, (109), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2024-11-28 04:50:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:28,082 INFO L225 Difference]: With dead ends: 229 [2024-11-28 04:50:28,083 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 04:50:28,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:50:28,084 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 301 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:28,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 754 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:50:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 04:50:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 201. [2024-11-28 04:50:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 146 states have (on average 1.417808219178082) internal successors, (207), 185 states have internal predecessors, (207), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-11-28 04:50:28,098 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 53 [2024-11-28 04:50:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:28,098 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-11-28 04:50:28,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.8125) internal successors, (109), 15 states have internal predecessors, (109), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:50:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-11-28 04:50:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:50:28,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:28,099 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:50:28,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:50:28,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:50:28,304 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:28,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1763279397, now seen corresponding path program 1 times [2024-11-28 04:50:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025378932] [2024-11-28 04:50:28,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683477965] [2024-11-28 04:50:28,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:28,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:28,347 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:28,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:50:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:28,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:50:28,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:28,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:28,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:50:28,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:50:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:28,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:29,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025378932] [2024-11-28 04:50:29,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683477965] [2024-11-28 04:50:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683477965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:29,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:29,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:50:29,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074245872] [2024-11-28 04:50:29,378 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:29,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:50:29,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:29,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:50:29,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:50:29,379 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:29,682 INFO L93 Difference]: Finished difference Result 208 states and 230 transitions. [2024-11-28 04:50:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:50:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-28 04:50:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:29,686 INFO L225 Difference]: With dead ends: 208 [2024-11-28 04:50:29,686 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 04:50:29,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:50:29,687 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 92 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:29,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 459 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:50:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 04:50:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2024-11-28 04:50:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 146 states have (on average 1.4109589041095891) internal successors, (206), 185 states have internal predecessors, (206), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 229 transitions. [2024-11-28 04:50:29,701 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 229 transitions. Word has length 54 [2024-11-28 04:50:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:29,702 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 229 transitions. [2024-11-28 04:50:29,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 229 transitions. [2024-11-28 04:50:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:50:29,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:29,703 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:50:29,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:29,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:50:29,904 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:29,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1172913434, now seen corresponding path program 1 times [2024-11-28 04:50:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828460491] [2024-11-28 04:50:29,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:29,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536327610] [2024-11-28 04:50:29,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:29,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:29,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:29,935 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:29,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:50:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:30,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:50:30,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:30,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:30,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:30,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:32,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828460491] [2024-11-28 04:50:32,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536327610] [2024-11-28 04:50:32,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536327610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:32,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:32,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:50:32,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73383653] [2024-11-28 04:50:32,374 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:32,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:50:32,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:32,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:50:32,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=317, Unknown=1, NotChecked=0, Total=380 [2024-11-28 04:50:32,375 INFO L87 Difference]: Start difference. First operand 201 states and 229 transitions. Second operand has 14 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:32,776 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2024-11-28 04:50:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:50:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-28 04:50:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:32,777 INFO L225 Difference]: With dead ends: 207 [2024-11-28 04:50:32,777 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 04:50:32,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=528, Unknown=1, NotChecked=0, Total=650 [2024-11-28 04:50:32,778 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 82 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:32,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 668 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:50:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 04:50:32,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 201. [2024-11-28 04:50:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 146 states have (on average 1.404109589041096) internal successors, (205), 185 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 228 transitions. [2024-11-28 04:50:32,794 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 228 transitions. Word has length 55 [2024-11-28 04:50:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:32,794 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 228 transitions. [2024-11-28 04:50:32,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:50:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 228 transitions. [2024-11-28 04:50:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:50:32,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:32,795 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:50:32,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:50:32,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:50:32,995 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:32,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2000577977, now seen corresponding path program 1 times [2024-11-28 04:50:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009101439] [2024-11-28 04:50:32,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023865379] [2024-11-28 04:50:33,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:33,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:33,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:33,020 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:33,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:50:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:33,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-28 04:50:33,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:33,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:33,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:33,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:33,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:33,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009101439] [2024-11-28 04:50:34,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023865379] [2024-11-28 04:50:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023865379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:34,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:50:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2024-11-28 04:50:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624276606] [2024-11-28 04:50:34,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:34,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:50:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:34,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:50:34,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:50:34,481 INFO L87 Difference]: Start difference. First operand 201 states and 228 transitions. Second operand has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:38,996 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2024-11-28 04:50:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:50:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-28 04:50:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:38,998 INFO L225 Difference]: With dead ends: 205 [2024-11-28 04:50:38,998 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 04:50:38,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=494, Invalid=2586, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:50:38,999 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 456 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:38,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 852 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:50:39,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 04:50:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2024-11-28 04:50:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 146 states have (on average 1.36986301369863) internal successors, (200), 183 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 223 transitions. [2024-11-28 04:50:39,015 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 223 transitions. Word has length 56 [2024-11-28 04:50:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:39,016 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 223 transitions. [2024-11-28 04:50:39,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 223 transitions. [2024-11-28 04:50:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:50:39,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:39,017 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:50:39,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:39,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:50:39,217 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:39,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1589916265, now seen corresponding path program 1 times [2024-11-28 04:50:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395541028] [2024-11-28 04:50:39,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685159432] [2024-11-28 04:50:39,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:39,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:39,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:39,239 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:50:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:39,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 04:50:39,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:39,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:39,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:39,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:39,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:40,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:50:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395541028] [2024-11-28 04:50:40,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685159432] [2024-11-28 04:50:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685159432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:40,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:50:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2024-11-28 04:50:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748096346] [2024-11-28 04:50:40,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:40,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:50:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:40,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:50:40,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:50:40,800 INFO L87 Difference]: Start difference. First operand 199 states and 223 transitions. Second operand has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:46,481 INFO L93 Difference]: Finished difference Result 201 states and 223 transitions. [2024-11-28 04:50:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 04:50:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-11-28 04:50:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:46,482 INFO L225 Difference]: With dead ends: 201 [2024-11-28 04:50:46,482 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 04:50:46,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=528, Invalid=2894, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:50:46,483 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 379 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:46,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 716 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:50:46,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 04:50:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2024-11-28 04:50:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 182 states have internal predecessors, (196), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 219 transitions. [2024-11-28 04:50:46,497 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 219 transitions. Word has length 58 [2024-11-28 04:50:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:46,497 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 219 transitions. [2024-11-28 04:50:46,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 219 transitions. [2024-11-28 04:50:46,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:50:46,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:46,498 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:46,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:46,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:50:46,698 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:46,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1078758579, now seen corresponding path program 1 times [2024-11-28 04:50:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:46,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897081985] [2024-11-28 04:50:46,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:50:46,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897081985] [2024-11-28 04:50:46,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897081985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:46,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:46,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:50:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878495791] [2024-11-28 04:50:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:46,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:50:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:46,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:50:46,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:50:46,934 INFO L87 Difference]: Start difference. First operand 198 states and 219 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:47,077 INFO L93 Difference]: Finished difference Result 198 states and 219 transitions. [2024-11-28 04:50:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:50:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2024-11-28 04:50:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:47,080 INFO L225 Difference]: With dead ends: 198 [2024-11-28 04:50:47,080 INFO L226 Difference]: Without dead ends: 197 [2024-11-28 04:50:47,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:50:47,081 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 69 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:47,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 535 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-28 04:50:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-28 04:50:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 181 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 217 transitions. [2024-11-28 04:50:47,105 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 217 transitions. Word has length 67 [2024-11-28 04:50:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:47,106 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 217 transitions. [2024-11-28 04:50:47,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 217 transitions. [2024-11-28 04:50:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:50:47,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:47,108 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:47,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 04:50:47,109 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:47,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 466746859, now seen corresponding path program 1 times [2024-11-28 04:50:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322222415] [2024-11-28 04:50:47,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:47,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:50:47,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322222415] [2024-11-28 04:50:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322222415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911944517] [2024-11-28 04:50:47,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:47,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:47,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:47,543 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:47,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:50:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:47,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:50:47,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:47,853 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 8 treesize of output 1 [2024-11-28 04:50:48,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:50:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:48,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911944517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:48,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:50:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2024-11-28 04:50:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569657473] [2024-11-28 04:50:48,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:48,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:50:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:48,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:50:48,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:50:48,401 INFO L87 Difference]: Start difference. First operand 197 states and 217 transitions. Second operand has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:50:52,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:52,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:52,809 INFO L93 Difference]: Finished difference Result 197 states and 217 transitions. [2024-11-28 04:50:52,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:50:52,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 72 [2024-11-28 04:50:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:52,810 INFO L225 Difference]: With dead ends: 197 [2024-11-28 04:50:52,810 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 04:50:52,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:50:52,811 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 156 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:52,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 303 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 04:50:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 04:50:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-28 04:50:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 146 states have (on average 1.321917808219178) internal successors, (193), 180 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 216 transitions. [2024-11-28 04:50:52,834 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 216 transitions. Word has length 72 [2024-11-28 04:50:52,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:52,835 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 216 transitions. [2024-11-28 04:50:52,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:50:52,835 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 216 transitions. [2024-11-28 04:50:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:50:52,836 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:52,836 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:52,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:53,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:53,040 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:53,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 775656686, now seen corresponding path program 1 times [2024-11-28 04:50:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:53,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338778709] [2024-11-28 04:50:53,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:53,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:50:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626535828] [2024-11-28 04:50:53,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:53,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:53,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:53,090 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:53,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:50:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:53,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:50:53,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:53,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:53,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:50:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:53,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338778709] [2024-11-28 04:50:53,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:50:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626535828] [2024-11-28 04:50:53,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626535828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:53,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:53,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:50:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131766134] [2024-11-28 04:50:53,908 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:53,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:50:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:53,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:50:53,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:50:53,909 INFO L87 Difference]: Start difference. First operand 196 states and 216 transitions. Second operand has 14 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:54,373 INFO L93 Difference]: Finished difference Result 237 states and 254 transitions. [2024-11-28 04:50:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:50:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2024-11-28 04:50:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:54,375 INFO L225 Difference]: With dead ends: 237 [2024-11-28 04:50:54,375 INFO L226 Difference]: Without dead ends: 236 [2024-11-28 04:50:54,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:50:54,376 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 92 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:54,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 836 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:50:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-28 04:50:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 200. [2024-11-28 04:50:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 149 states have (on average 1.308724832214765) internal successors, (195), 183 states have internal predecessors, (195), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:50:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 218 transitions. [2024-11-28 04:50:54,402 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 218 transitions. Word has length 72 [2024-11-28 04:50:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:54,402 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 218 transitions. [2024-11-28 04:50:54,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:50:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 218 transitions. [2024-11-28 04:50:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:50:54,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:54,403 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:54,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:50:54,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 04:50:54,604 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:50:54,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1584250779, now seen corresponding path program 1 times [2024-11-28 04:50:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977921057] [2024-11-28 04:50:54,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:50:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977921057] [2024-11-28 04:50:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977921057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226718287] [2024-11-28 04:50:55,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:55,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:55,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:55,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:50:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:55,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:50:55,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:55,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:50:55,679 WARN L873 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_26_to_34_0_~x.offset Int)) (let ((.cse0 (select (select |c_#memory_int#2| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) func_to_recursive_line_26_to_34_0_~x.offset))) (and (<= .cse0 1537228672809129301) (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~x.base| (store (select |c_old(#memory_int#2)| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) func_to_recursive_line_26_to_34_0_~x.offset .cse0)))))) is different from true [2024-11-28 04:50:55,720 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-28 04:50:55,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-28 04:50:55,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:50:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-28 04:50:55,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:56,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226718287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:56,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:50:56,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 16 [2024-11-28 04:50:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927447389] [2024-11-28 04:50:56,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:56,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:50:56,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:56,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:50:56,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=236, Unknown=1, NotChecked=32, Total=342 [2024-11-28 04:50:56,133 INFO L87 Difference]: Start difference. First operand 200 states and 218 transitions. Second operand has 17 states, 14 states have (on average 8.285714285714286) internal successors, (116), 15 states have internal predecessors, (116), 7 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 04:51:00,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:51:08,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:51:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:08,826 INFO L93 Difference]: Finished difference Result 200 states and 218 transitions. [2024-11-28 04:51:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:51:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.285714285714286) internal successors, (116), 15 states have internal predecessors, (116), 7 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 73 [2024-11-28 04:51:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:08,827 INFO L225 Difference]: With dead ends: 200 [2024-11-28 04:51:08,827 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 04:51:08,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=160, Invalid=492, Unknown=2, NotChecked=48, Total=702 [2024-11-28 04:51:08,828 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 194 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:08,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 315 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 2 Unknown, 100 Unchecked, 8.5s Time] [2024-11-28 04:51:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 04:51:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-28 04:51:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 149 states have (on average 1.3020134228187918) internal successors, (194), 182 states have internal predecessors, (194), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:51:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 217 transitions. [2024-11-28 04:51:08,852 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 217 transitions. Word has length 73 [2024-11-28 04:51:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:08,852 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 217 transitions. [2024-11-28 04:51:08,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.285714285714286) internal successors, (116), 15 states have internal predecessors, (116), 7 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 04:51:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 217 transitions. [2024-11-28 04:51:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:51:08,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:08,854 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, 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] [2024-11-28 04:51:08,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:51:09,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:09,058 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:09,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1867133933, now seen corresponding path program 1 times [2024-11-28 04:51:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567193390] [2024-11-28 04:51:09,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:09,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:51:09,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:09,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567193390] [2024-11-28 04:51:09,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567193390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:09,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057949834] [2024-11-28 04:51:09,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:09,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:09,364 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:09,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:51:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:09,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:51:09,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:09,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:10,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:51:10,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:51:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:51:10,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:10,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-28 04:51:10,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057949834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:10,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:10,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2024-11-28 04:51:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501906916] [2024-11-28 04:51:10,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:10,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:51:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:10,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:51:10,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:51:10,602 INFO L87 Difference]: Start difference. First operand 199 states and 217 transitions. Second operand has 17 states, 15 states have (on average 7.866666666666666) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 04:51:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:11,348 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2024-11-28 04:51:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:51:11,349 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.866666666666666) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 74 [2024-11-28 04:51:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:11,352 INFO L225 Difference]: With dead ends: 199 [2024-11-28 04:51:11,352 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:51:11,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:51:11,353 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 123 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:11,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 343 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:51:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-28 04:51:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 149 states have (on average 1.2953020134228188) internal successors, (193), 181 states have internal predecessors, (193), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-28 04:51:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2024-11-28 04:51:11,378 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 74 [2024-11-28 04:51:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:11,379 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2024-11-28 04:51:11,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.866666666666666) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 04:51:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2024-11-28 04:51:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:51:11,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:11,381 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:11,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:51:11,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 04:51:11,585 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:11,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1918229936, now seen corresponding path program 1 times [2024-11-28 04:51:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:11,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014383497] [2024-11-28 04:51:11,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229225510] [2024-11-28 04:51:11,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:11,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:11,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:11,618 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:11,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:51:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:11,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 04:51:11,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:11,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:11,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:12,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:12,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:12,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:51:13,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:13,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014383497] [2024-11-28 04:51:13,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:13,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229225510] [2024-11-28 04:51:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229225510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:13,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:13,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2024-11-28 04:51:13,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939991932] [2024-11-28 04:51:13,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:13,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:51:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:13,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:51:13,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:51:13,530 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand has 26 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:16,135 INFO L93 Difference]: Finished difference Result 303 states and 316 transitions. [2024-11-28 04:51:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 04:51:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 74 [2024-11-28 04:51:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:16,136 INFO L225 Difference]: With dead ends: 303 [2024-11-28 04:51:16,136 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 04:51:16,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=353, Invalid=1627, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:51:16,138 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 379 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:16,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1092 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:51:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 04:51:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 242. [2024-11-28 04:51:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 189 states have (on average 1.3280423280423281) internal successors, (251), 222 states have internal predecessors, (251), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 04:51:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 280 transitions. [2024-11-28 04:51:16,170 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 280 transitions. Word has length 74 [2024-11-28 04:51:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:16,171 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 280 transitions. [2024-11-28 04:51:16,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 280 transitions. [2024-11-28 04:51:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:51:16,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:16,171 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, 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] [2024-11-28 04:51:16,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:16,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 04:51:16,372 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:16,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2046577117, now seen corresponding path program 1 times [2024-11-28 04:51:16,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:16,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007004396] [2024-11-28 04:51:16,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:51:16,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007004396] [2024-11-28 04:51:16,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007004396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18319849] [2024-11-28 04:51:16,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:16,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:16,626 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:16,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:51:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:16,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:51:16,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:16,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:17,031 WARN L873 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_26_to_34_0_~y.offset Int)) (let ((.cse1 (select (select |c_#memory_int#1| |c_func_to_recursive_line_26_to_34_0_#in~y.base|) func_to_recursive_line_26_to_34_0_~y.offset)) (.cse0 (select |c_old(#memory_int#1)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (and (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse0 func_to_recursive_line_26_to_34_0_~y.offset .cse1))) (<= .cse1 (+ (select .cse0 func_to_recursive_line_26_to_34_0_~y.offset) 1))))) is different from true [2024-11-28 04:51:17,173 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-28 04:51:17,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 32 [2024-11-28 04:51:17,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:51:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 2 not checked. [2024-11-28 04:51:17,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:17,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18319849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:17,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:17,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-28 04:51:17,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338147157] [2024-11-28 04:51:17,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:17,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:51:17,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:17,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:51:17,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=196, Unknown=1, NotChecked=28, Total=272 [2024-11-28 04:51:17,416 INFO L87 Difference]: Start difference. First operand 242 states and 280 transitions. Second operand has 16 states, 14 states have (on average 8.571428571428571) internal successors, (120), 16 states have internal predecessors, (120), 7 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 04:51:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:18,144 INFO L93 Difference]: Finished difference Result 273 states and 313 transitions. [2024-11-28 04:51:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:51:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.571428571428571) internal successors, (120), 16 states have internal predecessors, (120), 7 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 75 [2024-11-28 04:51:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:18,146 INFO L225 Difference]: With dead ends: 273 [2024-11-28 04:51:18,146 INFO L226 Difference]: Without dead ends: 271 [2024-11-28 04:51:18,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=574, Unknown=1, NotChecked=50, Total=756 [2024-11-28 04:51:18,147 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 182 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:18,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 242 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 126 Unchecked, 0.4s Time] [2024-11-28 04:51:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-28 04:51:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 240. [2024-11-28 04:51:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 189 states have (on average 1.306878306878307) internal successors, (247), 220 states have internal predecessors, (247), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 04:51:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 276 transitions. [2024-11-28 04:51:18,178 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 276 transitions. Word has length 75 [2024-11-28 04:51:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:18,179 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 276 transitions. [2024-11-28 04:51:18,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.571428571428571) internal successors, (120), 16 states have internal predecessors, (120), 7 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 04:51:18,179 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 276 transitions. [2024-11-28 04:51:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:51:18,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:18,180 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, 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] [2024-11-28 04:51:18,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:51:18,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 04:51:18,384 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:18,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -980618769, now seen corresponding path program 1 times [2024-11-28 04:51:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:18,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125307247] [2024-11-28 04:51:18,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:18,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840082883] [2024-11-28 04:51:18,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:18,409 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:18,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:51:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:18,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:51:18,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:18,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:18,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:51:18,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:51:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:51:18,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125307247] [2024-11-28 04:51:19,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840082883] [2024-11-28 04:51:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840082883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:19,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:19,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-28 04:51:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659563668] [2024-11-28 04:51:19,316 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:19,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:51:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:19,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:51:19,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:51:19,317 INFO L87 Difference]: Start difference. First operand 240 states and 276 transitions. Second operand has 10 states, 8 states have (on average 8.125) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:19,663 INFO L93 Difference]: Finished difference Result 271 states and 308 transitions. [2024-11-28 04:51:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:51:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 76 [2024-11-28 04:51:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:19,664 INFO L225 Difference]: With dead ends: 271 [2024-11-28 04:51:19,664 INFO L226 Difference]: Without dead ends: 270 [2024-11-28 04:51:19,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:51:19,665 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 88 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:19,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 311 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:51:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-28 04:51:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 246. [2024-11-28 04:51:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 195 states have (on average 1.2974358974358975) internal successors, (253), 225 states have internal predecessors, (253), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 04:51:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2024-11-28 04:51:19,700 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 76 [2024-11-28 04:51:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:19,701 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2024-11-28 04:51:19,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2024-11-28 04:51:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:51:19,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:19,702 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, 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] [2024-11-28 04:51:19,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 04:51:19,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 04:51:19,902 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:19,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash -334410721, now seen corresponding path program 1 times [2024-11-28 04:51:19,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:19,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52944139] [2024-11-28 04:51:19,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:19,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:19,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510781681] [2024-11-28 04:51:19,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:19,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:19,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:19,932 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:19,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:51:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:20,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:51:20,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:20,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:20,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:51:20,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:20,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:20,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52944139] [2024-11-28 04:51:20,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:20,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510781681] [2024-11-28 04:51:20,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510781681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:20,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:20,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:51:20,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903591947] [2024-11-28 04:51:20,991 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:20,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:51:20,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:20,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:51:20,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:51:20,992 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:21,392 INFO L93 Difference]: Finished difference Result 270 states and 307 transitions. [2024-11-28 04:51:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:51:21,393 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 77 [2024-11-28 04:51:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:21,395 INFO L225 Difference]: With dead ends: 270 [2024-11-28 04:51:21,395 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 04:51:21,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:51:21,395 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 71 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:21,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 404 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:51:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 04:51:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 247. [2024-11-28 04:51:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 196 states have (on average 1.2959183673469388) internal successors, (254), 226 states have internal predecessors, (254), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 04:51:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 283 transitions. [2024-11-28 04:51:21,423 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 283 transitions. Word has length 77 [2024-11-28 04:51:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:21,423 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 283 transitions. [2024-11-28 04:51:21,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 283 transitions. [2024-11-28 04:51:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:51:21,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:21,424 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, 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] [2024-11-28 04:51:21,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:21,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:21,624 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:21,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1776797711, now seen corresponding path program 1 times [2024-11-28 04:51:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:21,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279108615] [2024-11-28 04:51:21,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:21,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476944662] [2024-11-28 04:51:21,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:21,647 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:21,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:51:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:21,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:51:21,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:21,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:22,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:51:22,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:23,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279108615] [2024-11-28 04:51:23,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:23,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476944662] [2024-11-28 04:51:23,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476944662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:23,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:23,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:51:23,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657244221] [2024-11-28 04:51:23,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:23,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:51:23,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:23,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:51:23,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:51:23,056 INFO L87 Difference]: Start difference. First operand 247 states and 283 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:23,496 INFO L93 Difference]: Finished difference Result 269 states and 306 transitions. [2024-11-28 04:51:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:51:23,496 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 78 [2024-11-28 04:51:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:23,498 INFO L225 Difference]: With dead ends: 269 [2024-11-28 04:51:23,498 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 04:51:23,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:51:23,499 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 81 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:23,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 517 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:51:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 04:51:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 248. [2024-11-28 04:51:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 197 states have (on average 1.2944162436548223) internal successors, (255), 227 states have internal predecessors, (255), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 04:51:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 284 transitions. [2024-11-28 04:51:23,532 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 284 transitions. Word has length 78 [2024-11-28 04:51:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:23,533 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 284 transitions. [2024-11-28 04:51:23,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 284 transitions. [2024-11-28 04:51:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:51:23,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:23,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:51:23,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:51:23,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 04:51:23,734 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting func_to_recursive_line_26_to_34_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:23,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash 48191158, now seen corresponding path program 1 times [2024-11-28 04:51:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:23,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135494045] [2024-11-28 04:51:23,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:23,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332982922] [2024-11-28 04:51:23,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:23,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:23,769 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:23,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:51:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:23,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 04:51:23,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:23,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:23,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:24,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:24,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:24,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:51:24,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:51:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:24,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:51:25,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135494045] [2024-11-28 04:51:25,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332982922] [2024-11-28 04:51:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332982922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:25,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:25,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2024-11-28 04:51:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259215318] [2024-11-28 04:51:25,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:25,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:51:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:25,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:51:25,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:51:25,686 INFO L87 Difference]: Start difference. First operand 248 states and 284 transitions. Second operand has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:28,477 INFO L93 Difference]: Finished difference Result 344 states and 359 transitions. [2024-11-28 04:51:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 04:51:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2024-11-28 04:51:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:28,479 INFO L225 Difference]: With dead ends: 344 [2024-11-28 04:51:28,479 INFO L226 Difference]: Without dead ends: 343 [2024-11-28 04:51:28,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:51:28,480 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 823 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:28,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 909 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:51:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-28 04:51:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 276. [2024-11-28 04:51:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 221 states have (on average 1.3076923076923077) internal successors, (289), 252 states have internal predecessors, (289), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 324 transitions. [2024-11-28 04:51:28,522 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 324 transitions. Word has length 79 [2024-11-28 04:51:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:28,522 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 324 transitions. [2024-11-28 04:51:28,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 324 transitions. [2024-11-28 04:51:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:51:28,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:28,523 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, 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] [2024-11-28 04:51:28,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:28,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:28,724 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:28,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 753845857, now seen corresponding path program 1 times [2024-11-28 04:51:28,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376048735] [2024-11-28 04:51:28,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999183458] [2024-11-28 04:51:28,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:28,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:28,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:28,781 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:28,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:51:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:29,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:51:29,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:29,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:29,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:51:29,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376048735] [2024-11-28 04:51:30,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999183458] [2024-11-28 04:51:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999183458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:30,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:30,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:51:30,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106919147] [2024-11-28 04:51:30,083 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:30,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:51:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:30,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:51:30,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:51:30,085 INFO L87 Difference]: Start difference. First operand 276 states and 324 transitions. Second operand has 14 states, 12 states have (on average 5.916666666666667) internal successors, (71), 14 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:30,468 INFO L93 Difference]: Finished difference Result 296 states and 345 transitions. [2024-11-28 04:51:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:51:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.916666666666667) internal successors, (71), 14 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2024-11-28 04:51:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:30,471 INFO L225 Difference]: With dead ends: 296 [2024-11-28 04:51:30,471 INFO L226 Difference]: Without dead ends: 295 [2024-11-28 04:51:30,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:51:30,472 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 82 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:30,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 502 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:51:30,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-28 04:51:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 277. [2024-11-28 04:51:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 222 states have (on average 1.3063063063063063) internal successors, (290), 253 states have internal predecessors, (290), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 325 transitions. [2024-11-28 04:51:30,543 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 325 transitions. Word has length 79 [2024-11-28 04:51:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:30,543 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 325 transitions. [2024-11-28 04:51:30,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.916666666666667) internal successors, (71), 14 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 325 transitions. [2024-11-28 04:51:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 04:51:30,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:30,544 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, 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] [2024-11-28 04:51:30,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:30,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:30,745 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:30,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1894385139, now seen corresponding path program 1 times [2024-11-28 04:51:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:30,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393508721] [2024-11-28 04:51:30,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:51:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954952207] [2024-11-28 04:51:30,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:30,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:30,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:30,782 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:30,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 04:51:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:30,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:51:30,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:30,994 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 11 treesize of output 7 [2024-11-28 04:51:31,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:31,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:31,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:51:32,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:33,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2024-11-28 04:51:33,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2024-11-28 04:51:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393508721] [2024-11-28 04:51:38,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954952207] [2024-11-28 04:51:38,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954952207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:38,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:38,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-28 04:51:38,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908465059] [2024-11-28 04:51:38,440 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:38,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:51:38,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:38,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:51:38,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2024-11-28 04:51:38,448 INFO L87 Difference]: Start difference. First operand 277 states and 325 transitions. Second operand has 15 states, 12 states have (on average 5.75) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:39,076 INFO L93 Difference]: Finished difference Result 293 states and 344 transitions. [2024-11-28 04:51:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:51:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.75) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 80 [2024-11-28 04:51:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:39,078 INFO L225 Difference]: With dead ends: 293 [2024-11-28 04:51:39,078 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 04:51:39,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=91, Invalid=508, Unknown=1, NotChecked=0, Total=600 [2024-11-28 04:51:39,079 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 85 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:39,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 418 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 04:51:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2024-11-28 04:51:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 224 states have (on average 1.2901785714285714) internal successors, (289), 254 states have internal predecessors, (289), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 324 transitions. [2024-11-28 04:51:39,131 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 324 transitions. Word has length 80 [2024-11-28 04:51:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:39,131 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 324 transitions. [2024-11-28 04:51:39,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.75) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:51:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 324 transitions. [2024-11-28 04:51:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:51:39,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:39,132 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:51:39,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 04:51:39,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:39,333 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:39,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1143795585, now seen corresponding path program 2 times [2024-11-28 04:51:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:39,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132307225] [2024-11-28 04:51:39,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:39,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:39,359 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:39,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:51:39,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078212625] [2024-11-28 04:51:39,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:39,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:39,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:39,364 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:39,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 04:51:39,560 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:51:39,560 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:39,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:51:39,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:39,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:51:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:51:39,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132307225] [2024-11-28 04:51:39,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078212625] [2024-11-28 04:51:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078212625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:39,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:51:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011987632] [2024-11-28 04:51:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:39,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:39,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:39,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:39,584 INFO L87 Difference]: Start difference. First operand 278 states and 324 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:51:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:39,701 INFO L93 Difference]: Finished difference Result 278 states and 324 transitions. [2024-11-28 04:51:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2024-11-28 04:51:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:39,702 INFO L225 Difference]: With dead ends: 278 [2024-11-28 04:51:39,702 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 04:51:39,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:39,703 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 35 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:39,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 175 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 04:51:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2024-11-28 04:51:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 253 states have internal predecessors, (285), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2024-11-28 04:51:39,759 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 82 [2024-11-28 04:51:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:39,759 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2024-11-28 04:51:39,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:51:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2024-11-28 04:51:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:51:39,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:39,760 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:39,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:39,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:39,960 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:39,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash -562013195, now seen corresponding path program 1 times [2024-11-28 04:51:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:39,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368488294] [2024-11-28 04:51:39,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:39,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:51:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368488294] [2024-11-28 04:51:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368488294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31306739] [2024-11-28 04:51:41,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:41,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:41,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:41,064 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:41,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 04:51:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:41,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:51:41,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:41,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:41,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:51:41,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:51:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:51:41,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:42,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-28 04:51:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31306739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:42,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-28 04:51:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680060177] [2024-11-28 04:51:42,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:42,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:51:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:42,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:51:42,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:51:42,095 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand has 16 states, 14 states have (on average 7.5) internal successors, (105), 16 states have internal predecessors, (105), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 04:51:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:42,946 INFO L93 Difference]: Finished difference Result 277 states and 320 transitions. [2024-11-28 04:51:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:51:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.5) internal successors, (105), 16 states have internal predecessors, (105), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 82 [2024-11-28 04:51:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:42,948 INFO L225 Difference]: With dead ends: 277 [2024-11-28 04:51:42,948 INFO L226 Difference]: Without dead ends: 276 [2024-11-28 04:51:42,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:51:42,949 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 59 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:42,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 252 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:51:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-28 04:51:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-28 04:51:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 224 states have (on average 1.2678571428571428) internal successors, (284), 252 states have internal predecessors, (284), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 319 transitions. [2024-11-28 04:51:42,978 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 319 transitions. Word has length 82 [2024-11-28 04:51:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:42,978 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 319 transitions. [2024-11-28 04:51:42,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.5) internal successors, (105), 16 states have internal predecessors, (105), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 04:51:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 319 transitions. [2024-11-28 04:51:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:51:42,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:42,979 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:51:42,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:43,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:43,179 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:43,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1097924858, now seen corresponding path program 2 times [2024-11-28 04:51:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335670629] [2024-11-28 04:51:43,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:43,211 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:43,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:51:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965392437] [2024-11-28 04:51:43,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:43,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:43,215 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:43,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 04:51:43,451 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:43,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:43,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 04:51:43,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:43,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:43,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:43,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:51:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:43,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335670629] [2024-11-28 04:51:47,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:51:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965392437] [2024-11-28 04:51:47,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965392437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:47,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:47,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-28 04:51:47,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051377159] [2024-11-28 04:51:47,589 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:47,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:51:47,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:47,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:51:47,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=431, Unknown=1, NotChecked=0, Total=506 [2024-11-28 04:51:47,590 INFO L87 Difference]: Start difference. First operand 276 states and 319 transitions. Second operand has 17 states, 15 states have (on average 5.066666666666666) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:51:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:48,509 INFO L93 Difference]: Finished difference Result 299 states and 333 transitions. [2024-11-28 04:51:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:51:48,509 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.066666666666666) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2024-11-28 04:51:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:48,511 INFO L225 Difference]: With dead ends: 299 [2024-11-28 04:51:48,511 INFO L226 Difference]: Without dead ends: 298 [2024-11-28 04:51:48,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=142, Invalid=727, Unknown=1, NotChecked=0, Total=870 [2024-11-28 04:51:48,511 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 176 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:48,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1104 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:51:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-28 04:51:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 276. [2024-11-28 04:51:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 224 states have (on average 1.2633928571428572) internal successors, (283), 252 states have internal predecessors, (283), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 318 transitions. [2024-11-28 04:51:48,554 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 318 transitions. Word has length 83 [2024-11-28 04:51:48,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:48,554 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 318 transitions. [2024-11-28 04:51:48,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.066666666666666) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:51:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 318 transitions. [2024-11-28 04:51:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:51:48,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:48,555 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:48,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:48,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:48,756 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:48,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash -242539803, now seen corresponding path program 1 times [2024-11-28 04:51:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:48,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465385836] [2024-11-28 04:51:48,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:51:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465385836] [2024-11-28 04:51:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465385836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207511299] [2024-11-28 04:51:49,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:49,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:49,447 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:49,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 04:51:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:49,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:51:49,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:49,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:50,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:51:50,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:51:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:51:50,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:50,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 04:51:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207511299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:50,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:50,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-28 04:51:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913046799] [2024-11-28 04:51:50,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:50,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:51:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:50,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:51:50,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:51:50,779 INFO L87 Difference]: Start difference. First operand 276 states and 318 transitions. Second operand has 16 states, 14 states have (on average 7.571428571428571) internal successors, (106), 16 states have internal predecessors, (106), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 04:51:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:51,267 INFO L93 Difference]: Finished difference Result 289 states and 332 transitions. [2024-11-28 04:51:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:51:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.571428571428571) internal successors, (106), 16 states have internal predecessors, (106), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2024-11-28 04:51:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:51,269 INFO L225 Difference]: With dead ends: 289 [2024-11-28 04:51:51,269 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 04:51:51,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:51:51,270 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:51,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 217 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:51:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 04:51:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 278. [2024-11-28 04:51:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 226 states have (on average 1.261061946902655) internal successors, (285), 254 states have internal predecessors, (285), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:51:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 320 transitions. [2024-11-28 04:51:51,311 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 320 transitions. Word has length 83 [2024-11-28 04:51:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:51,311 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 320 transitions. [2024-11-28 04:51:51,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.571428571428571) internal successors, (106), 16 states have internal predecessors, (106), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 04:51:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 320 transitions. [2024-11-28 04:51:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:51:51,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:51,312 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:51:51,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 04:51:51,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:51,516 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:51:51,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash -324067677, now seen corresponding path program 2 times [2024-11-28 04:51:51,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:51,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278016431] [2024-11-28 04:51:51,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:51,547 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:51,547 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:51:51,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895914383] [2024-11-28 04:51:51,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:51,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:51,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:51,553 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:51,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 04:51:51,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:51,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:51,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 04:51:51,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:51,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:51:51,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:51:52,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:51:52,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 04:51:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:52,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278016431] [2024-11-28 04:52:01,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895914383] [2024-11-28 04:52:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895914383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:01,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-28 04:52:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079599457] [2024-11-28 04:52:01,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:01,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:52:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:01,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:52:01,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=453, Unknown=2, NotChecked=0, Total=552 [2024-11-28 04:52:01,154 INFO L87 Difference]: Start difference. First operand 278 states and 320 transitions. Second operand has 16 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:52:05,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:52:09,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:52:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:10,040 INFO L93 Difference]: Finished difference Result 278 states and 320 transitions. [2024-11-28 04:52:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:52:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2024-11-28 04:52:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:10,041 INFO L225 Difference]: With dead ends: 278 [2024-11-28 04:52:10,041 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 04:52:10,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=237, Invalid=883, Unknown=2, NotChecked=0, Total=1122 [2024-11-28 04:52:10,042 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 215 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:10,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 768 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 506 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2024-11-28 04:52:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 04:52:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2024-11-28 04:52:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 226 states have (on average 1.2433628318584071) internal successors, (281), 253 states have internal predecessors, (281), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 316 transitions. [2024-11-28 04:52:10,066 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 316 transitions. Word has length 84 [2024-11-28 04:52:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:10,066 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 316 transitions. [2024-11-28 04:52:10,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:52:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 316 transitions. [2024-11-28 04:52:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:52:10,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:10,067 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:10,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:10,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-28 04:52:10,267 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:10,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1071200759, now seen corresponding path program 1 times [2024-11-28 04:52:10,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:10,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568105664] [2024-11-28 04:52:10,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:52:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516976366] [2024-11-28 04:52:10,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:10,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:10,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:10,297 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:10,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 04:52:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:10,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:52:10,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:10,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:10,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:52:10,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:11,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568105664] [2024-11-28 04:52:11,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516976366] [2024-11-28 04:52:11,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516976366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:11,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:11,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:52:11,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118491088] [2024-11-28 04:52:11,572 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:11,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:52:11,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:11,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:52:11,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:52:11,573 INFO L87 Difference]: Start difference. First operand 277 states and 316 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:11,954 INFO L93 Difference]: Finished difference Result 287 states and 327 transitions. [2024-11-28 04:52:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:52:11,954 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 84 [2024-11-28 04:52:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:11,956 INFO L225 Difference]: With dead ends: 287 [2024-11-28 04:52:11,956 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 04:52:11,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:52:11,956 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 40 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:11,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 516 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:52:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 04:52:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 278. [2024-11-28 04:52:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 227 states have (on average 1.2422907488986785) internal successors, (282), 254 states have internal predecessors, (282), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 317 transitions. [2024-11-28 04:52:11,991 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 317 transitions. Word has length 84 [2024-11-28 04:52:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:11,991 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 317 transitions. [2024-11-28 04:52:11,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 317 transitions. [2024-11-28 04:52:11,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:52:11,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:11,992 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:52:11,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:12,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 04:52:12,192 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:12,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1456163300, now seen corresponding path program 2 times [2024-11-28 04:52:12,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:12,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678326222] [2024-11-28 04:52:12,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:12,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:12,222 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:52:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309743744] [2024-11-28 04:52:12,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:12,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:12,226 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:12,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 04:52:12,483 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:12,483 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:12,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 04:52:12,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:12,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:12,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:12,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:12,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:13,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:13,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678326222] [2024-11-28 04:52:13,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:13,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309743744] [2024-11-28 04:52:13,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309743744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:13,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:13,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-28 04:52:13,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025498940] [2024-11-28 04:52:13,785 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:13,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:52:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:13,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:52:13,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:52:13,786 INFO L87 Difference]: Start difference. First operand 278 states and 317 transitions. Second operand has 18 states, 16 states have (on average 4.875) internal successors, (78), 14 states have internal predecessors, (78), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:52:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:14,605 INFO L93 Difference]: Finished difference Result 294 states and 326 transitions. [2024-11-28 04:52:14,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:52:14,605 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.875) internal successors, (78), 14 states have internal predecessors, (78), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 85 [2024-11-28 04:52:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:14,607 INFO L225 Difference]: With dead ends: 294 [2024-11-28 04:52:14,607 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 04:52:14,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:52:14,608 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 165 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:14,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1014 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 04:52:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 278. [2024-11-28 04:52:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 227 states have (on average 1.2378854625550662) internal successors, (281), 254 states have internal predecessors, (281), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 316 transitions. [2024-11-28 04:52:14,637 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 316 transitions. Word has length 85 [2024-11-28 04:52:14,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:14,638 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 316 transitions. [2024-11-28 04:52:14,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.875) internal successors, (78), 14 states have internal predecessors, (78), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:52:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 316 transitions. [2024-11-28 04:52:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:52:14,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:14,638 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:14,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:14,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-28 04:52:14,839 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:14,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1152514777, now seen corresponding path program 1 times [2024-11-28 04:52:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:14,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26833145] [2024-11-28 04:52:14,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:14,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:52:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212029237] [2024-11-28 04:52:14,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:14,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:14,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:14,867 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:14,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 04:52:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:15,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:52:15,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:15,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:15,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:52:15,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26833145] [2024-11-28 04:52:16,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212029237] [2024-11-28 04:52:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212029237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:16,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:52:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871732395] [2024-11-28 04:52:16,057 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:16,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:52:16,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:16,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:52:16,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:52:16,057 INFO L87 Difference]: Start difference. First operand 278 states and 316 transitions. Second operand has 13 states, 11 states have (on average 7.0) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:16,444 INFO L93 Difference]: Finished difference Result 286 states and 325 transitions. [2024-11-28 04:52:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:52:16,445 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.0) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 85 [2024-11-28 04:52:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:16,446 INFO L225 Difference]: With dead ends: 286 [2024-11-28 04:52:16,446 INFO L226 Difference]: Without dead ends: 285 [2024-11-28 04:52:16,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:52:16,447 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:16,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 523 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:52:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-28 04:52:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2024-11-28 04:52:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 228 states have (on average 1.236842105263158) internal successors, (282), 255 states have internal predecessors, (282), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 317 transitions. [2024-11-28 04:52:16,489 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 317 transitions. Word has length 85 [2024-11-28 04:52:16,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:16,489 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 317 transitions. [2024-11-28 04:52:16,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.0) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 317 transitions. [2024-11-28 04:52:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:52:16,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:16,490 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:16,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 04:52:16,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:16,691 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:16,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1368219655, now seen corresponding path program 1 times [2024-11-28 04:52:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465024430] [2024-11-28 04:52:16,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:52:16,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121514294] [2024-11-28 04:52:16,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:16,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:16,719 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 04:52:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:16,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-28 04:52:16,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:16,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:16,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:17,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:17,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:52:18,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:24,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-11-28 04:52:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465024430] [2024-11-28 04:52:24,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121514294] [2024-11-28 04:52:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121514294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:24,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:24,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-28 04:52:24,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200480109] [2024-11-28 04:52:24,926 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:24,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:52:24,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:24,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:52:24,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=610, Unknown=1, NotChecked=0, Total=702 [2024-11-28 04:52:24,932 INFO L87 Difference]: Start difference. First operand 279 states and 317 transitions. Second operand has 17 states, 14 states have (on average 5.357142857142857) internal successors, (75), 16 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:25,641 INFO L93 Difference]: Finished difference Result 285 states and 324 transitions. [2024-11-28 04:52:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:52:25,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 5.357142857142857) internal successors, (75), 16 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 86 [2024-11-28 04:52:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:25,643 INFO L225 Difference]: With dead ends: 285 [2024-11-28 04:52:25,643 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 04:52:25,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=105, Invalid=650, Unknown=1, NotChecked=0, Total=756 [2024-11-28 04:52:25,644 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 37 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:25,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 397 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 04:52:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2024-11-28 04:52:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 230 states have (on average 1.2347826086956522) internal successors, (284), 257 states have internal predecessors, (284), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 319 transitions. [2024-11-28 04:52:25,688 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 319 transitions. Word has length 86 [2024-11-28 04:52:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:25,688 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 319 transitions. [2024-11-28 04:52:25,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 5.357142857142857) internal successors, (75), 16 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 319 transitions. [2024-11-28 04:52:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:52:25,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:25,690 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:52:25,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:25,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:25,890 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:25,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash 786410302, now seen corresponding path program 1 times [2024-11-28 04:52:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954619630] [2024-11-28 04:52:25,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:52:25,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527783778] [2024-11-28 04:52:25,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:25,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:25,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:25,916 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:25,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 04:52:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:26,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-28 04:52:26,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:26,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:26,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:26,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:26,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:26,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:26,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:27,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:52:28,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954619630] [2024-11-28 04:52:28,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527783778] [2024-11-28 04:52:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527783778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:28,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:52:28,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2024-11-28 04:52:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165005918] [2024-11-28 04:52:28,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:28,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:52:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:28,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:52:28,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:52:28,417 INFO L87 Difference]: Start difference. First operand 281 states and 319 transitions. Second operand has 38 states, 35 states have (on average 4.457142857142857) internal successors, (156), 32 states have internal predecessors, (156), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:35,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:52:42,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:52:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:44,096 INFO L93 Difference]: Finished difference Result 312 states and 326 transitions. [2024-11-28 04:52:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 04:52:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 4.457142857142857) internal successors, (156), 32 states have internal predecessors, (156), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 87 [2024-11-28 04:52:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:44,098 INFO L225 Difference]: With dead ends: 312 [2024-11-28 04:52:44,098 INFO L226 Difference]: Without dead ends: 311 [2024-11-28 04:52:44,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=861, Invalid=5145, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 04:52:44,099 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 774 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 63 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:44,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1349 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2012 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2024-11-28 04:52:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-28 04:52:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 281. [2024-11-28 04:52:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 230 states have (on average 1.2217391304347827) internal successors, (281), 257 states have internal predecessors, (281), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 316 transitions. [2024-11-28 04:52:44,146 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 316 transitions. Word has length 87 [2024-11-28 04:52:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:44,147 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 316 transitions. [2024-11-28 04:52:44,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 4.457142857142857) internal successors, (156), 32 states have internal predecessors, (156), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 316 transitions. [2024-11-28 04:52:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 04:52:44,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:44,148 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:44,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:44,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-28 04:52:44,348 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:44,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash -599093765, now seen corresponding path program 1 times [2024-11-28 04:52:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225008042] [2024-11-28 04:52:44,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:52:44,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264542487] [2024-11-28 04:52:44,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:44,377 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:44,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 04:52:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:44,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 04:52:44,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:44,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:44,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:45,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 04:52:45,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:52:45,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:50,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2024-11-28 04:52:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225008042] [2024-11-28 04:52:51,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264542487] [2024-11-28 04:52:51,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264542487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:51,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:51,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-28 04:52:51,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429434756] [2024-11-28 04:52:51,145 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:51,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:52:51,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:51,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:52:51,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=650, Unknown=1, NotChecked=0, Total=756 [2024-11-28 04:52:51,146 INFO L87 Difference]: Start difference. First operand 281 states and 316 transitions. Second operand has 18 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:51,845 INFO L93 Difference]: Finished difference Result 284 states and 319 transitions. [2024-11-28 04:52:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:52:51,846 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 88 [2024-11-28 04:52:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:51,848 INFO L225 Difference]: With dead ends: 284 [2024-11-28 04:52:51,848 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 04:52:51,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=105, Invalid=650, Unknown=1, NotChecked=0, Total=756 [2024-11-28 04:52:51,849 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:51,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 394 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:52:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 04:52:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2024-11-28 04:52:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 231 states have (on average 1.2207792207792207) internal successors, (282), 258 states have internal predecessors, (282), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-28 04:52:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 317 transitions. [2024-11-28 04:52:51,889 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 317 transitions. Word has length 88 [2024-11-28 04:52:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:51,890 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 317 transitions. [2024-11-28 04:52:51,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:52:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 317 transitions. [2024-11-28 04:52:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:52:51,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:51,890 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:51,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 04:52:52,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:52,091 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:52,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1392037461, now seen corresponding path program 1 times [2024-11-28 04:52:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276143905] [2024-11-28 04:52:52,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:52:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276143905] [2024-11-28 04:52:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276143905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728251354] [2024-11-28 04:52:52,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:52,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:52,809 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:52,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 04:52:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:53,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:52:53,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:53,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:53,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:52:53,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:52:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:52:53,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:55,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728251354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:55,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:52:55,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2024-11-28 04:52:55,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005606016] [2024-11-28 04:52:55,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:55,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:52:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:55,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:52:55,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:52:55,874 INFO L87 Difference]: Start difference. First operand 282 states and 317 transitions. Second operand has 16 states, 14 states have (on average 8.571428571428571) internal successors, (120), 16 states have internal predecessors, (120), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 04:52:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:56,652 INFO L93 Difference]: Finished difference Result 282 states and 317 transitions. [2024-11-28 04:52:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:52:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.571428571428571) internal successors, (120), 16 states have internal predecessors, (120), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 89 [2024-11-28 04:52:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:56,653 INFO L225 Difference]: With dead ends: 282 [2024-11-28 04:52:56,653 INFO L226 Difference]: Without dead ends: 258 [2024-11-28 04:52:56,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:52:56,654 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 53 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:56,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 293 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-28 04:52:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-28 04:52:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 210 states have (on average 1.2333333333333334) internal successors, (259), 236 states have internal predecessors, (259), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:52:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 292 transitions. [2024-11-28 04:52:56,689 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 292 transitions. Word has length 89 [2024-11-28 04:52:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:56,689 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 292 transitions. [2024-11-28 04:52:56,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.571428571428571) internal successors, (120), 16 states have internal predecessors, (120), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 04:52:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 292 transitions. [2024-11-28 04:52:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 04:52:56,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:56,690 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:52:56,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:56,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:56,890 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:56,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1097192439, now seen corresponding path program 2 times [2024-11-28 04:52:56,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:56,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071312528] [2024-11-28 04:52:56,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:56,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:56,915 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:56,916 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:52:56,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889654776] [2024-11-28 04:52:56,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:56,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:56,919 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:56,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 04:52:57,145 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:52:57,145 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:57,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:52:57,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:57,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:52:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:52:57,172 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:57,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071312528] [2024-11-28 04:52:57,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889654776] [2024-11-28 04:52:57,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889654776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:57,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:57,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:57,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240094660] [2024-11-28 04:52:57,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:57,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:52:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:57,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:52:57,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:52:57,173 INFO L87 Difference]: Start difference. First operand 258 states and 292 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:52:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:57,257 INFO L93 Difference]: Finished difference Result 258 states and 292 transitions. [2024-11-28 04:52:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:52:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2024-11-28 04:52:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:57,259 INFO L225 Difference]: With dead ends: 258 [2024-11-28 04:52:57,259 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 04:52:57,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:57,260 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 13 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:57,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 193 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:52:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 04:52:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-28 04:52:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 235 states have internal predecessors, (255), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:52:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 288 transitions. [2024-11-28 04:52:57,305 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 288 transitions. Word has length 90 [2024-11-28 04:52:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:57,305 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 288 transitions. [2024-11-28 04:52:57,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:52:57,305 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 288 transitions. [2024-11-28 04:52:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:52:57,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:57,306 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:52:57,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:57,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 04:52:57,510 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:57,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash 346772866, now seen corresponding path program 2 times [2024-11-28 04:52:57,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:57,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763778829] [2024-11-28 04:52:57,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:57,532 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:57,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:52:57,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297736228] [2024-11-28 04:52:57,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:57,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:57,538 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:57,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 04:52:57,776 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:52:57,776 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:57,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:52:57,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:58,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 21 [2024-11-28 04:52:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:52:58,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763778829] [2024-11-28 04:52:58,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:52:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297736228] [2024-11-28 04:52:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297736228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:58,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:58,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:52:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655998131] [2024-11-28 04:52:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:58,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:52:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:58,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:52:58,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:52:58,122 INFO L87 Difference]: Start difference. First operand 257 states and 288 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:52:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:58,471 INFO L93 Difference]: Finished difference Result 257 states and 288 transitions. [2024-11-28 04:52:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:52:58,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2024-11-28 04:52:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:58,473 INFO L225 Difference]: With dead ends: 257 [2024-11-28 04:52:58,473 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 04:52:58,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:52:58,473 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:58,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 251 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:52:58,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 04:52:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-28 04:52:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 210 states have (on average 1.180952380952381) internal successors, (248), 233 states have internal predecessors, (248), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:52:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 281 transitions. [2024-11-28 04:52:58,517 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 281 transitions. Word has length 91 [2024-11-28 04:52:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:58,517 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 281 transitions. [2024-11-28 04:52:58,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:52:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 281 transitions. [2024-11-28 04:52:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:52:58,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:58,518 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:52:58,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:58,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-28 04:52:58,719 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting func_to_recursive_line_26_to_34_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:52:58,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:58,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1758721372, now seen corresponding path program 1 times [2024-11-28 04:52:58,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:58,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141874184] [2024-11-28 04:52:58,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:52:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131762343] [2024-11-28 04:52:58,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:58,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:58,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:58,747 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:58,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 04:52:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:59,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 04:52:59,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:59,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:52:59,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:59,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:52:59,481 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 [2024-11-28 04:52:59,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 04:52:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:59,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:53:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:01,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141874184] [2024-11-28 04:53:01,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:53:01,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131762343] [2024-11-28 04:53:01,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131762343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:01,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:53:01,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2024-11-28 04:53:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239588358] [2024-11-28 04:53:01,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:01,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:53:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:01,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:53:01,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:53:01,278 INFO L87 Difference]: Start difference. First operand 255 states and 281 transitions. Second operand has 34 states, 31 states have (on average 5.419354838709677) internal successors, (168), 28 states have internal predecessors, (168), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:53:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:06,734 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2024-11-28 04:53:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 04:53:06,735 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 5.419354838709677) internal successors, (168), 28 states have internal predecessors, (168), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 93 [2024-11-28 04:53:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:06,742 INFO L225 Difference]: With dead ends: 256 [2024-11-28 04:53:06,742 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 04:53:06,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=901, Invalid=3655, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:53:06,743 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 535 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:06,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1036 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:53:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 04:53:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2024-11-28 04:53:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 210 states have (on average 1.161904761904762) internal successors, (244), 232 states have internal predecessors, (244), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:53:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 277 transitions. [2024-11-28 04:53:06,793 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 277 transitions. Word has length 93 [2024-11-28 04:53:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:06,794 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 277 transitions. [2024-11-28 04:53:06,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 5.419354838709677) internal successors, (168), 28 states have internal predecessors, (168), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:53:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 277 transitions. [2024-11-28 04:53:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:53:06,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:06,795 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:53:06,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:06,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:06,999 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:53:06,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2085879750, now seen corresponding path program 1 times [2024-11-28 04:53:06,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:06,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810803073] [2024-11-28 04:53:06,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:53:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810803073] [2024-11-28 04:53:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810803073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633811415] [2024-11-28 04:53:07,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:07,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:07,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:07,779 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:07,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 04:53:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:08,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:53:08,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:08,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:53:08,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:53:08,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:53:08,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:53:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:08,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:17,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633811415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:17,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:53:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-11-28 04:53:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701041911] [2024-11-28 04:53:17,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:17,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:53:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:17,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:53:17,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=462, Unknown=1, NotChecked=0, Total=552 [2024-11-28 04:53:17,327 INFO L87 Difference]: Start difference. First operand 254 states and 277 transitions. Second operand has 19 states, 17 states have (on average 7.705882352941177) internal successors, (131), 16 states have internal predecessors, (131), 5 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:53:21,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:53:25,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:53:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:26,495 INFO L93 Difference]: Finished difference Result 254 states and 277 transitions. [2024-11-28 04:53:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:53:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.705882352941177) internal successors, (131), 16 states have internal predecessors, (131), 5 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 95 [2024-11-28 04:53:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:26,497 INFO L225 Difference]: With dead ends: 254 [2024-11-28 04:53:26,497 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 04:53:26,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=214, Invalid=907, Unknown=1, NotChecked=0, Total=1122 [2024-11-28 04:53:26,497 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 156 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:26,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 770 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 652 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2024-11-28 04:53:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 04:53:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-28 04:53:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 210 states have (on average 1.1428571428571428) internal successors, (240), 231 states have internal predecessors, (240), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:53:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 273 transitions. [2024-11-28 04:53:26,547 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 273 transitions. Word has length 95 [2024-11-28 04:53:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:26,547 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 273 transitions. [2024-11-28 04:53:26,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.705882352941177) internal successors, (131), 16 states have internal predecessors, (131), 5 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:53:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 273 transitions. [2024-11-28 04:53:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:53:26,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:26,548 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:53:26,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:26,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:26,749 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:53:26,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash -905769518, now seen corresponding path program 2 times [2024-11-28 04:53:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:26,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632633549] [2024-11-28 04:53:26,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:53:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:26,805 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:53:26,805 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:53:26,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536489053] [2024-11-28 04:53:26,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:53:26,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:26,811 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:26,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 04:53:27,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:53:27,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:27,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:53:27,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:45,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:53:45,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 58 [2024-11-28 04:53:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:53:49,542 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:49,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632633549] [2024-11-28 04:53:49,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:53:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536489053] [2024-11-28 04:53:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536489053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 04:53:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451614244] [2024-11-28 04:53:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:53:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:49,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:53:49,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=149, Unknown=5, NotChecked=0, Total=210 [2024-11-28 04:53:49,544 INFO L87 Difference]: Start difference. First operand 253 states and 273 transitions. Second operand has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:53:53,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:53:57,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:01,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:05,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:10,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:14,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:18,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:22,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:26,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:30,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:34,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:43,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:47,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:51,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:54:54,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:55:00,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:55:04,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:55:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:04,299 INFO L93 Difference]: Finished difference Result 253 states and 273 transitions. [2024-11-28 04:55:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:55:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 108 [2024-11-28 04:55:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:04,301 INFO L225 Difference]: With dead ends: 253 [2024-11-28 04:55:04,301 INFO L226 Difference]: Without dead ends: 252 [2024-11-28 04:55:04,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=115, Invalid=299, Unknown=6, NotChecked=0, Total=420 [2024-11-28 04:55:04,302 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 60 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 6 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:04,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 260 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 318 Invalid, 15 Unknown, 0 Unchecked, 69.0s Time] [2024-11-28 04:55:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-28 04:55:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-28 04:55:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 210 states have (on average 1.1285714285714286) internal successors, (237), 230 states have internal predecessors, (237), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:55:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2024-11-28 04:55:04,367 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 108 [2024-11-28 04:55:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:04,367 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2024-11-28 04:55:04,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:55:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2024-11-28 04:55:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:55:04,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:04,369 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:04,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-28 04:55:04,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-28 04:55:04,572 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:55:04,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash 451551975, now seen corresponding path program 2 times [2024-11-28 04:55:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738035017] [2024-11-28 04:55:04,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:04,606 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:04,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:55:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308049942] [2024-11-28 04:55:04,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:04,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:04,612 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:04,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 04:55:04,856 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:55:04,856 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:04,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:55:04,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:04,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:55:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-28 04:55:04,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:55:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738035017] [2024-11-28 04:55:04,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:55:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308049942] [2024-11-28 04:55:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308049942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:04,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:04,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559740687] [2024-11-28 04:55:04,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:04,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:55:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:04,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:55:04,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:55:04,881 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:55:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:05,002 INFO L93 Difference]: Finished difference Result 252 states and 270 transitions. [2024-11-28 04:55:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:55:05,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 114 [2024-11-28 04:55:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:05,004 INFO L225 Difference]: With dead ends: 252 [2024-11-28 04:55:05,004 INFO L226 Difference]: Without dead ends: 251 [2024-11-28 04:55:05,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:55:05,005 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:05,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 150 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:55:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-28 04:55:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-28 04:55:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 210 states have (on average 1.1238095238095238) internal successors, (236), 229 states have internal predecessors, (236), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:55:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 269 transitions. [2024-11-28 04:55:05,060 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 269 transitions. Word has length 114 [2024-11-28 04:55:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:05,060 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 269 transitions. [2024-11-28 04:55:05,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:55:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 269 transitions. [2024-11-28 04:55:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:55:05,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:05,061 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:05,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:05,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2024-11-28 04:55:05,262 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:55:05,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1113209383, now seen corresponding path program 2 times [2024-11-28 04:55:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284054838] [2024-11-28 04:55:05,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:05,290 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:05,290 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:55:05,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967019524] [2024-11-28 04:55:05,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:05,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:05,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:05,294 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:05,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 04:55:05,619 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:05,619 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:05,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 04:55:05,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:05,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:55:06,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:55:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:55:06,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:07,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284054838] [2024-11-28 04:55:07,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:55:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967019524] [2024-11-28 04:55:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967019524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:07,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:55:07,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:55:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784408656] [2024-11-28 04:55:07,206 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:07,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:55:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:07,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:55:07,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:55:07,207 INFO L87 Difference]: Start difference. First operand 251 states and 269 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:55:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:07,794 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2024-11-28 04:55:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:55:07,795 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 115 [2024-11-28 04:55:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:07,796 INFO L225 Difference]: With dead ends: 281 [2024-11-28 04:55:07,796 INFO L226 Difference]: Without dead ends: 280 [2024-11-28 04:55:07,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:55:07,796 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 53 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:07,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 421 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:55:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-28 04:55:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 260. [2024-11-28 04:55:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 218 states have (on average 1.1192660550458715) internal successors, (244), 236 states have internal predecessors, (244), 12 states have call successors, (12), 9 states have call predecessors, (12), 13 states have return successors, (27), 14 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-28 04:55:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2024-11-28 04:55:07,843 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 115 [2024-11-28 04:55:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:07,844 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2024-11-28 04:55:07,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:55:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2024-11-28 04:55:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:55:07,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:07,844 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:07,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-28 04:55:08,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:08,045 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:55:08,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 149752553, now seen corresponding path program 2 times [2024-11-28 04:55:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:08,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566995242] [2024-11-28 04:55:08,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:08,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:08,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:08,076 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:55:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980394048] [2024-11-28 04:55:08,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:08,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:08,081 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:08,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 04:55:08,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:08,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:08,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 04:55:08,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:08,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:55:09,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:55:09,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 04:55:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:55:09,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:10,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566995242] [2024-11-28 04:55:10,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:55:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980394048] [2024-11-28 04:55:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980394048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:10,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:55:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-28 04:55:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930076949] [2024-11-28 04:55:10,544 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:10,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:55:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:10,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:55:10,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:55:10,545 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:55:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:11,454 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2024-11-28 04:55:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:55:11,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 116 [2024-11-28 04:55:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:11,456 INFO L225 Difference]: With dead ends: 260 [2024-11-28 04:55:11,456 INFO L226 Difference]: Without dead ends: 259 [2024-11-28 04:55:11,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:55:11,457 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:11,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 499 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-28 04:55:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-28 04:55:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 218 states have (on average 1.114678899082569) internal successors, (243), 235 states have internal predecessors, (243), 12 states have call successors, (12), 9 states have call predecessors, (12), 13 states have return successors, (27), 14 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-28 04:55:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 282 transitions. [2024-11-28 04:55:11,490 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 282 transitions. Word has length 116 [2024-11-28 04:55:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:11,490 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 282 transitions. [2024-11-28 04:55:11,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:55:11,490 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 282 transitions. [2024-11-28 04:55:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:55:11,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:11,491 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:55:11,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:11,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:11,691 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:55:11,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2062340980, now seen corresponding path program 2 times [2024-11-28 04:55:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504538824] [2024-11-28 04:55:11,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:11,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:11,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:55:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504538824] [2024-11-28 04:55:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504538824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343334847] [2024-11-28 04:55:12,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:12,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:12,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:12,587 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:12,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 04:55:12,892 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:12,892 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:12,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:55:12,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:12,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:55:13,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:55:13,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:55:13,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:55:14,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:55:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:14,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:55:14,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343334847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:14,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:55:14,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 14] total 44 [2024-11-28 04:55:14,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439937314] [2024-11-28 04:55:14,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:14,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:55:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:14,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:55:14,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:55:14,899 INFO L87 Difference]: Start difference. First operand 259 states and 282 transitions. Second operand has 45 states, 41 states have (on average 7.365853658536586) internal successors, (302), 33 states have internal predecessors, (302), 17 states have call successors, (21), 16 states have call predecessors, (21), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:55:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:17,198 INFO L93 Difference]: Finished difference Result 376 states and 401 transitions. [2024-11-28 04:55:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 04:55:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 7.365853658536586) internal successors, (302), 33 states have internal predecessors, (302), 17 states have call successors, (21), 16 states have call predecessors, (21), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 117 [2024-11-28 04:55:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:17,200 INFO L225 Difference]: With dead ends: 376 [2024-11-28 04:55:17,201 INFO L226 Difference]: Without dead ends: 375 [2024-11-28 04:55:17,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=778, Invalid=3382, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 04:55:17,201 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 492 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:17,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1013 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:55:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-28 04:55:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 337. [2024-11-28 04:55:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 286 states have (on average 1.1223776223776223) internal successors, (321), 305 states have internal predecessors, (321), 16 states have call successors, (16), 12 states have call predecessors, (16), 19 states have return successors, (37), 19 states have call predecessors, (37), 16 states have call successors, (37) [2024-11-28 04:55:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 374 transitions. [2024-11-28 04:55:17,247 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 374 transitions. Word has length 117 [2024-11-28 04:55:17,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:17,247 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 374 transitions. [2024-11-28 04:55:17,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 7.365853658536586) internal successors, (302), 33 states have internal predecessors, (302), 17 states have call successors, (21), 16 states have call predecessors, (21), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:55:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 374 transitions. [2024-11-28 04:55:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:55:17,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:17,248 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:17,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:17,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:17,449 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:55:17,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 347361897, now seen corresponding path program 2 times [2024-11-28 04:55:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663846381] [2024-11-28 04:55:17,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:17,481 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:17,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:55:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888396027] [2024-11-28 04:55:17,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:17,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:17,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:17,485 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:17,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 04:55:17,809 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:17,809 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:17,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 04:55:17,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:17,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:55:18,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:55:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 04:55:18,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663846381] [2024-11-28 04:55:19,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:55:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888396027] [2024-11-28 04:55:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888396027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:19,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:55:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:55:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065751415] [2024-11-28 04:55:19,283 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:19,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:55:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:19,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:55:19,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:55:19,284 INFO L87 Difference]: Start difference. First operand 337 states and 374 transitions. Second operand has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:55:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:19,829 INFO L93 Difference]: Finished difference Result 356 states and 393 transitions. [2024-11-28 04:55:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:55:19,829 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 117 [2024-11-28 04:55:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:19,831 INFO L225 Difference]: With dead ends: 356 [2024-11-28 04:55:19,831 INFO L226 Difference]: Without dead ends: 355 [2024-11-28 04:55:19,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:55:19,831 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 54 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:19,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 392 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:55:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-28 04:55:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 339. [2024-11-28 04:55:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 288 states have (on average 1.1215277777777777) internal successors, (323), 307 states have internal predecessors, (323), 16 states have call successors, (16), 12 states have call predecessors, (16), 19 states have return successors, (37), 19 states have call predecessors, (37), 16 states have call successors, (37) [2024-11-28 04:55:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 376 transitions. [2024-11-28 04:55:19,892 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 376 transitions. Word has length 117 [2024-11-28 04:55:19,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:19,892 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 376 transitions. [2024-11-28 04:55:19,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:55:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 376 transitions. [2024-11-28 04:55:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:55:19,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:19,893 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:19,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:20,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:20,093 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:55:20,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2116683029, now seen corresponding path program 2 times [2024-11-28 04:55:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:20,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032434806] [2024-11-28 04:55:20,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:20,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:20,131 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:20,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:55:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207167940] [2024-11-28 04:55:20,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:55:20,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:20,136 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:20,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 04:55:20,469 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:55:20,470 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:20,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-28 04:55:20,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:20,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:55:21,605 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 [2024-11-28 04:56:27,371 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int#1| |c_func_to_recursive_line_26_to_34_0_#in~y.base|) |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* 3 .cse2 .cse2) (* 2 .cse2 .cse2 .cse2) .cse2)))) (and (<= (div .cse0 6) (select (select |c_#memory_int#2| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)) (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (let ((.cse1 (select |c_old(#memory_int#1)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (store .cse1 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ (select .cse1 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|) 1))))) (= (mod .cse0 6) 0))) is different from true [2024-11-28 04:56:39,420 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int#1| |c_func_to_recursive_line_26_to_34_0_#in~y.base|) |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* 3 .cse2 .cse2) (* 2 .cse2 .cse2 .cse2) .cse2)))) (and (<= (div .cse0 6) (select (select |c_#memory_int#2| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)) (= (mod .cse0 6) 0) (= (store |c_old(#memory_int#1)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (let ((.cse1 (select |c_old(#memory_int#1)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (store .cse1 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ (select .cse1 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|) 2)))) |c_#memory_int#1|))) is different from true [2024-11-28 04:56:43,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:56:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 38 trivial. 6 not checked. [2024-11-28 04:56:43,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:52,907 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|))) (or (forall ((|ULTIMATE.start_main_#t~mem20#1| Int) (|ULTIMATE.start_main_#t~mem21#1| Int) (|ULTIMATE.start_main_#t~mem22#1| Int)) (let ((.cse1 (* |ULTIMATE.start_main_#t~mem22#1| |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|))) (or (< (+ (* (div (+ (* (- 37) .cse0) (* (- 2) .cse0 .cse0 .cse0) (* (- 15) .cse0 .cse0)) 6) 3) .cse1) 4611686018427387920) (< 4611686018427387903 .cse1)))) (not (= 0 (mod (+ (* .cse0 .cse0 3) (* 5 .cse0) (* .cse0 .cse0 .cse0 4)) 6))))) is different from false [2024-11-28 04:56:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032434806] [2024-11-28 04:56:52,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:56:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207167940] [2024-11-28 04:56:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207167940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:52,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:52,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2024-11-28 04:56:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331703873] [2024-11-28 04:56:52,913 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:52,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:56:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:52,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:56:52,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=509, Unknown=7, NotChecked=144, Total=756 [2024-11-28 04:56:52,914 INFO L87 Difference]: Start difference. First operand 339 states and 376 transitions. Second operand has 24 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:56:56,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:00,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:09,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:13,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:17,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:21,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:25,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:29,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:37,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:41,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:45,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:49,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:57:57,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:01,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:09,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:13,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:17,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:21,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:25,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:29,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:33,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:37,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:45,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:58:54,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:18,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:30,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:34,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:39,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:43,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:47,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:59:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:47,104 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2024-11-28 04:59:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:59:47,104 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 118 [2024-11-28 04:59:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:47,106 INFO L225 Difference]: With dead ends: 352 [2024-11-28 04:59:47,106 INFO L226 Difference]: Without dead ends: 351 [2024-11-28 04:59:47,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 106.5s TimeCoverageRelationStatistics Valid=238, Invalid=1166, Unknown=14, NotChecked=222, Total=1640 [2024-11-28 04:59:47,107 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 74 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 8 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 121.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:47,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 322 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 586 Invalid, 30 Unknown, 271 Unchecked, 121.1s Time] [2024-11-28 04:59:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-28 04:59:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 340. [2024-11-28 04:59:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 289 states have (on average 1.1211072664359862) internal successors, (324), 308 states have internal predecessors, (324), 16 states have call successors, (16), 12 states have call predecessors, (16), 19 states have return successors, (37), 19 states have call predecessors, (37), 16 states have call successors, (37) [2024-11-28 04:59:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 377 transitions. [2024-11-28 04:59:47,186 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 377 transitions. Word has length 118 [2024-11-28 04:59:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:47,186 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 377 transitions. [2024-11-28 04:59:47,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:59:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 377 transitions. [2024-11-28 04:59:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 04:59:47,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:47,187 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:59:47,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-28 04:59:47,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:47,388 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:59:47,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1929761174, now seen corresponding path program 3 times [2024-11-28 04:59:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:47,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341130873] [2024-11-28 04:59:47,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:59:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:47,449 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:59:47,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:59:47,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647731550] [2024-11-28 04:59:47,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:59:47,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:47,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:47,454 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:47,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7929f139-39d7-4978-bfef-d03ffb2ab582/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 04:59:47,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:59:47,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:47,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 04:59:47,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:09,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 36 [2024-11-28 05:00:18,162 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-28 05:00:18,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 47 [2024-11-28 05:00:22,399 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_26_to_34_0_#t~mem15_129| Int) (|v_func_to_recursive_line_26_to_34_0_#t~mem16_129| Int) (|func_to_recursive_line_26_to_34_0_#t~mem7| Int) (|func_to_recursive_line_26_to_34_0_#t~mem5| Int) (|func_to_recursive_line_26_to_34_0_#t~mem6| Int) (|func_to_recursive_line_26_to_34_0_#t~mem4| Int)) (let ((.cse0 (select (select |c_#memory_int#1| c_func_to_recursive_line_26_to_34_0_~y.base) c_func_to_recursive_line_26_to_34_0_~y.offset))) (and (<= .cse0 |v_func_to_recursive_line_26_to_34_0_#t~mem15_129|) (<= |func_to_recursive_line_26_to_34_0_#t~mem4| 1537228672809129301) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem6| 1) .cse0) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem7| 1) .cse0) (= (+ (* |func_to_recursive_line_26_to_34_0_#t~mem4| 6) (* 5 .cse0)) (+ (* 3 (* .cse0 .cse0)) 2 (* (* |func_to_recursive_line_26_to_34_0_#t~mem7| |func_to_recursive_line_26_to_34_0_#t~mem6| |func_to_recursive_line_26_to_34_0_#t~mem5|) 2))) (<= .cse0 |v_func_to_recursive_line_26_to_34_0_#t~mem16_129|) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem4| (* |v_func_to_recursive_line_26_to_34_0_#t~mem15_129| |v_func_to_recursive_line_26_to_34_0_#t~mem16_129|)) (select (select |c_#memory_int#2| c_func_to_recursive_line_26_to_34_0_~x.base) c_func_to_recursive_line_26_to_34_0_~x.offset)) (<= 0 (+ |func_to_recursive_line_26_to_34_0_#t~mem4| 1537228672809129301)) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem5| 1) .cse0)))) is different from true [2024-11-28 05:00:40,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:00:44,426 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_26_to_34_0_#t~mem15_129| Int) (|v_func_to_recursive_line_26_to_34_0_#t~mem16_129| Int) (|func_to_recursive_line_26_to_34_0_#t~mem7| Int) (|v_func_to_recursive_line_26_to_34_0_#t~mem4_392| Int) (|func_to_recursive_line_26_to_34_0_#t~mem5| Int) (|func_to_recursive_line_26_to_34_0_#t~mem6| Int)) (let ((.cse0 (select (select |c_#memory_int#1| c_func_to_recursive_line_26_to_34_0_~y.base) c_func_to_recursive_line_26_to_34_0_~y.offset))) (and (<= 0 (+ 1537228672809129301 |v_func_to_recursive_line_26_to_34_0_#t~mem4_392|)) (<= .cse0 |v_func_to_recursive_line_26_to_34_0_#t~mem15_129|) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem6| 1) .cse0) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem7| 1) .cse0) (= (+ (* 5 .cse0) (* 6 |v_func_to_recursive_line_26_to_34_0_#t~mem4_392|)) (+ (* 3 (* .cse0 .cse0)) 2 (* (* |func_to_recursive_line_26_to_34_0_#t~mem7| |func_to_recursive_line_26_to_34_0_#t~mem6| |func_to_recursive_line_26_to_34_0_#t~mem5|) 2))) (<= .cse0 |v_func_to_recursive_line_26_to_34_0_#t~mem16_129|) (<= |v_func_to_recursive_line_26_to_34_0_#t~mem4_392| 1537228672809129301) (<= (+ |func_to_recursive_line_26_to_34_0_#t~mem5| 1) .cse0) (<= (+ (* |v_func_to_recursive_line_26_to_34_0_#t~mem15_129| |v_func_to_recursive_line_26_to_34_0_#t~mem16_129|) |v_func_to_recursive_line_26_to_34_0_#t~mem4_392|) |c_func_to_recursive_line_26_to_34_0_#t~mem4|)))) is different from true [2024-11-28 05:00:44,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 49 [2024-11-28 05:00:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 2 not checked. [2024-11-28 05:00:45,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341130873] [2024-11-28 05:00:51,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:00:51,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647731550] [2024-11-28 05:00:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647731550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:51,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-28 05:00:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150454965] [2024-11-28 05:00:51,323 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:51,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 05:00:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:51,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 05:00:51,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=744, Unknown=7, NotChecked=114, Total=992 [2024-11-28 05:00:51,324 INFO L87 Difference]: Start difference. First operand 340 states and 377 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:00:56,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:00,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:04,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:08,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:12,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:16,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:20,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:24,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:29,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:33,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:37,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:41,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:45,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:49,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:53,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:57,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:01,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:06,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:10,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:14,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:18,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:26,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:31,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:35,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:39,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:43,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:47,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:57,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:03:01,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:03:09,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:03:18,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:03:45,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:03:49,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:04:13,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:04:17,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]