./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/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_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:24,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:24,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:26:24,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:24,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:24,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:24,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:24,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:24,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:24,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:24,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:24,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:24,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:24,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:24,588 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:24,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:24,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:26:24,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:24,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:24,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:24,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:24,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:26:24,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:24,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:26:24,590 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:24,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:26:24,591 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:24,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:24,591 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:24,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:24,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:24,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:24,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:24,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:24,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:24,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:24,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:24,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:24,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:24,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:24,594 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:26:24,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:26:24,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:26:24,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:26:24,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:24,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:24,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:24,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:24,596 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_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2024-11-28 03:26:24,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:24,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:24,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:24,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:24,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:24,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-28 03:26:28,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/data/9a5a22cef/10035217947046aba565a7e509f5cedc/FLAG4d01b15c8 [2024-11-28 03:26:28,567 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:28,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-28 03:26:28,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/data/9a5a22cef/10035217947046aba565a7e509f5cedc/FLAG4d01b15c8 [2024-11-28 03:26:28,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/data/9a5a22cef/10035217947046aba565a7e509f5cedc [2024-11-28 03:26:28,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:28,618 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:28,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:28,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:28,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:28,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6774c79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28, skipping insertion in model container [2024-11-28 03:26:28,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,685 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:28,893 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-11-28 03:26:28,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:28,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:28,994 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-11-28 03:26:29,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:29,063 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:29,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29 WrapperNode [2024-11-28 03:26:29,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:29,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:29,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:29,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:29,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,113 INFO L138 Inliner]: procedures = 18, calls = 127, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 95 [2024-11-28 03:26:29,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:29,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:29,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:29,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:29,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,163 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 5, 9, 6, 7, 7, 6, 5, 7, 5, 6, 6, 6]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2]. [2024-11-28 03:26:29,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,189 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:29,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:29,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:29,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:29,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:29,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:29,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:29,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:26:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:26:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:26:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 03:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 03:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 03:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 03:26:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-28 03:26:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-28 03:26:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-28 03:26:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-28 03:26:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:26:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-28 03:26:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-28 03:26:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 03:26:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 03:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 03:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 03:26:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 03:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 03:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 03:26:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 03:26:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 03:26:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 03:26:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:26:29,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:26:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:26:29,560 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:29,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:30,056 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-28 03:26:30,056 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:30,068 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:30,068 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:26:30,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:30 BoogieIcfgContainer [2024-11-28 03:26:30,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:30,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:30,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:30,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:30,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:28" (1/3) ... [2024-11-28 03:26:30,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2d3b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:30, skipping insertion in model container [2024-11-28 03:26:30,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29" (2/3) ... [2024-11-28 03:26:30,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2d3b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:30, skipping insertion in model container [2024-11-28 03:26:30,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:30" (3/3) ... [2024-11-28 03:26:30,084 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-11-28 03:26:30,110 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:30,113 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd3-ll.c that has 6 procedures, 53 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:26:30,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:30,229 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;@6f672956, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:30,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:26:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:26:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:26:30,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:30,245 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:30,245 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:30,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash -909827079, now seen corresponding path program 1 times [2024-11-28 03:26:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:30,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648756161] [2024-11-28 03:26:30,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:30,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:26:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648756161] [2024-11-28 03:26:30,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648756161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:30,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399558512] [2024-11-28 03:26:30,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:30,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:30,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:30,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:26:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:30,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:26:30,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:26:30,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399558512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:30,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:26:30,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379378750] [2024-11-28 03:26:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:30,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:26:30,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:31,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:26:31,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:26:31,012 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:26:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:31,052 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2024-11-28 03:26:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:26:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-28 03:26:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:31,063 INFO L225 Difference]: With dead ends: 103 [2024-11-28 03:26:31,063 INFO L226 Difference]: Without dead ends: 49 [2024-11-28 03:26:31,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:26:31,073 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:31,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:26:31,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-28 03:26:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-28 03:26:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 34 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 03:26:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-28 03:26:31,133 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 24 [2024-11-28 03:26:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:31,135 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-28 03:26:31,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:26:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-28 03:26:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:26:31,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:31,137 INFO L218 NwaCegarLoop]: trace histogram [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 03:26:31,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:26:31,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:26:31,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:31,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash 665195867, now seen corresponding path program 1 times [2024-11-28 03:26:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030470499] [2024-11-28 03:26:31,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:32,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:32,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030470499] [2024-11-28 03:26:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030470499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:32,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:32,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:26:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666880978] [2024-11-28 03:26:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:32,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:26:32,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:32,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:26:32,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:26:32,317 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:26:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:33,040 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2024-11-28 03:26:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:26:33,041 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2024-11-28 03:26:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:33,044 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:26:33,045 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 03:26:33,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:26:33,049 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 39 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:33,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 69 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:26:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 03:26:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-28 03:26:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 35 states have internal predecessors, (35), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-28 03:26:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-11-28 03:26:33,071 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 25 [2024-11-28 03:26:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:33,072 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-11-28 03:26:33,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:26:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-11-28 03:26:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:26:33,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:33,074 INFO L218 NwaCegarLoop]: trace histogram [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 03:26:33,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:26:33,075 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:33,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash 977283434, now seen corresponding path program 1 times [2024-11-28 03:26:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:33,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049476108] [2024-11-28 03:26:33,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:33,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:26:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219162297] [2024-11-28 03:26:33,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:33,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:33,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:33,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:33,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:26:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:33,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-28 03:26:33,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:33,564 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 03:26:33,588 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 03:26:33,596 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 03:26:33,609 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 11 [2024-11-28 03:26:34,039 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 03:26:34,046 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 03:26:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:26:34,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049476108] [2024-11-28 03:26:34,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:26:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219162297] [2024-11-28 03:26:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219162297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:34,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:26:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802744224] [2024-11-28 03:26:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:34,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:26:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:34,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:26:34,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:26:34,151 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:26:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:34,871 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2024-11-28 03:26:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:26:34,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-11-28 03:26:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:34,874 INFO L225 Difference]: With dead ends: 86 [2024-11-28 03:26:34,874 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 03:26:34,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:26:34,875 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 36 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:34,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 377 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:26:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 03:26:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2024-11-28 03:26:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.12) internal successors, (56), 56 states have internal predecessors, (56), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-28 03:26:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2024-11-28 03:26:34,906 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 29 [2024-11-28 03:26:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:34,906 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2024-11-28 03:26:34,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:26:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2024-11-28 03:26:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:26:34,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:34,908 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] [2024-11-28 03:26:34,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:35,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:35,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:35,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -227438513, now seen corresponding path program 1 times [2024-11-28 03:26:35,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:35,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785121390] [2024-11-28 03:26:35,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:26:35,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275723065] [2024-11-28 03:26:35,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:35,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:35,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:35,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:35,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:26:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:35,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-28 03:26:35,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:35,561 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 03:26:35,578 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 11 [2024-11-28 03:26:35,590 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 03:26:35,602 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 03:26:36,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:26:36,280 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 03:26:36,288 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 03:26:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:26:36,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:36,607 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 25 [2024-11-28 03:26:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:26:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785121390] [2024-11-28 03:26:37,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:26:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275723065] [2024-11-28 03:26:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275723065] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:37,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:37,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 22 [2024-11-28 03:26:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814609020] [2024-11-28 03:26:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:37,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:26:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:37,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:26:37,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:26:37,360 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 13 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:26:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:39,881 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2024-11-28 03:26:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:26:39,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-28 03:26:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:39,883 INFO L225 Difference]: With dead ends: 88 [2024-11-28 03:26:39,883 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 03:26:39,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:26:39,885 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 39 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:39,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 365 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:26:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 03:26:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2024-11-28 03:26:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 59 states have internal predecessors, (59), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-28 03:26:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2024-11-28 03:26:39,912 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 35 [2024-11-28 03:26:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:39,912 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2024-11-28 03:26:39,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:26:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2024-11-28 03:26:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:26:39,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:39,913 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] [2024-11-28 03:26:39,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:26:40,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:40,118 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:40,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash 524026268, now seen corresponding path program 1 times [2024-11-28 03:26:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:40,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027974624] [2024-11-28 03:26:40,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:40,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027974624] [2024-11-28 03:26:41,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027974624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:41,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895507741] [2024-11-28 03:26:41,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:41,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:41,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:41,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:26:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:41,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:26:41,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:41,930 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 03:26:41,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:26:42,001 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 03:26:42,058 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 27 treesize of output 19 [2024-11-28 03:26:42,067 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 03:26:42,217 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 03:26:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:42,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895507741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:43,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 38 [2024-11-28 03:26:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966457253] [2024-11-28 03:26:43,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:43,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:26:43,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:43,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:26:43,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:26:43,457 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 38 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 34 states have internal predecessors, (55), 14 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 03:26:47,468 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 03:26:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:49,396 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2024-11-28 03:26:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:26:49,397 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 34 states have internal predecessors, (55), 14 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) Word has length 38 [2024-11-28 03:26:49,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:49,398 INFO L225 Difference]: With dead ends: 105 [2024-11-28 03:26:49,398 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:26:49,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=335, Invalid=2635, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 03:26:49,401 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 164 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 133 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:49,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 111 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 03:26:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:26:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-28 03:26:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.1) internal successors, (66), 66 states have internal predecessors, (66), 22 states have call successors, (22), 11 states have call predecessors, (22), 14 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2024-11-28 03:26:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2024-11-28 03:26:49,429 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 38 [2024-11-28 03:26:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:49,429 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2024-11-28 03:26:49,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 34 states have internal predecessors, (55), 14 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 03:26:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2024-11-28 03:26:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:26:49,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:49,431 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] [2024-11-28 03:26:49,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:49,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:49,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:49,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash -349777783, now seen corresponding path program 1 times [2024-11-28 03:26:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:49,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105721031] [2024-11-28 03:26:49,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:49,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:26:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793507019] [2024-11-28 03:26:49,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:49,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:49,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:49,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:49,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:26:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:50,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 245 conjuncts are in the unsatisfiable core [2024-11-28 03:26:50,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:50,162 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 03:26:50,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:50,317 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 26 treesize of output 26 [2024-11-28 03:26:50,331 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 03:26:50,339 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 03:26:50,352 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 03:26:50,361 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 11 [2024-11-28 03:26:50,542 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 03:26:50,593 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 11 treesize of output 7 [2024-11-28 03:26:51,343 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 03:26:51,414 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-28 03:26:51,414 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 66 treesize of output 73 [2024-11-28 03:26:51,530 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-28 03:26:51,530 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 41 treesize of output 52 [2024-11-28 03:26:51,544 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 32 treesize of output 20 [2024-11-28 03:26:51,652 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 03:26:52,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:52,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 102 [2024-11-28 03:26:53,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:53,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 96 [2024-11-28 03:26:53,370 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 84 treesize of output 56 [2024-11-28 03:26:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:53,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105721031] [2024-11-28 03:26:55,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:26:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793507019] [2024-11-28 03:26:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793507019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:55,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2024-11-28 03:26:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173743249] [2024-11-28 03:26:55,262 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:55,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 03:26:55,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:55,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 03:26:55,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1600, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:26:55,264 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 31 states, 25 states have (on average 1.16) internal successors, (29), 21 states have internal predecessors, (29), 8 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:26:59,336 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 03:27:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:05,182 INFO L93 Difference]: Finished difference Result 175 states and 208 transitions. [2024-11-28 03:27:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:27:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.16) internal successors, (29), 21 states have internal predecessors, (29), 8 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2024-11-28 03:27:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:05,185 INFO L225 Difference]: With dead ends: 175 [2024-11-28 03:27:05,185 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 03:27:05,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=295, Invalid=3865, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:27:05,192 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 153 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:05,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 508 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1638 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2024-11-28 03:27:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 03:27:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2024-11-28 03:27:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.107843137254902) internal successors, (113), 112 states have internal predecessors, (113), 37 states have call successors, (37), 20 states have call predecessors, (37), 23 states have return successors, (47), 34 states have call predecessors, (47), 36 states have call successors, (47) [2024-11-28 03:27:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2024-11-28 03:27:05,253 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 40 [2024-11-28 03:27:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:05,255 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2024-11-28 03:27:05,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.16) internal successors, (29), 21 states have internal predecessors, (29), 8 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:27:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2024-11-28 03:27:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 03:27:05,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:05,256 INFO L218 NwaCegarLoop]: trace histogram [3, 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 03:27:05,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:27:05,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:05,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:05,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 318259314, now seen corresponding path program 1 times [2024-11-28 03:27:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:05,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415777942] [2024-11-28 03:27:05,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:27:05,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964907664] [2024-11-28 03:27:05,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:05,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:05,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:05,512 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:05,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:27:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:05,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 03:27:05,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:05,778 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 03:27:05,783 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 11 [2024-11-28 03:27:05,789 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 03:27:06,067 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 19 treesize of output 11 [2024-11-28 03:27:06,071 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 03:27:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:27:06,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:27:06,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:06,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415777942] [2024-11-28 03:27:06,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:27:06,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964907664] [2024-11-28 03:27:06,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964907664] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:06,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:27:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 11 [2024-11-28 03:27:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406015309] [2024-11-28 03:27:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:06,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:27:06,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:06,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:27:06,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:06,302 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:27:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:06,675 INFO L93 Difference]: Finished difference Result 216 states and 261 transitions. [2024-11-28 03:27:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:27:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2024-11-28 03:27:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:06,678 INFO L225 Difference]: With dead ends: 216 [2024-11-28 03:27:06,678 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 03:27:06,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:27:06,680 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:06,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 364 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:27:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 03:27:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2024-11-28 03:27:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 132 states have (on average 1.1136363636363635) internal successors, (147), 146 states have internal predecessors, (147), 49 states have call successors, (49), 26 states have call predecessors, (49), 29 states have return successors, (59), 44 states have call predecessors, (59), 48 states have call successors, (59) [2024-11-28 03:27:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 255 transitions. [2024-11-28 03:27:06,737 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 255 transitions. Word has length 41 [2024-11-28 03:27:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:06,738 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 255 transitions. [2024-11-28 03:27:06,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:27:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 255 transitions. [2024-11-28 03:27:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 03:27:06,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:06,739 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] [2024-11-28 03:27:06,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:27:06,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:27:06,940 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:06,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2002789422, now seen corresponding path program 1 times [2024-11-28 03:27:06,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:06,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992171933] [2024-11-28 03:27:06,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:27:06,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628974825] [2024-11-28 03:27:06,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:07,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:07,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:07,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:27:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:07,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 338 conjuncts are in the unsatisfiable core [2024-11-28 03:27:07,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:07,540 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 03:27:07,544 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 03:27:07,618 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 11 [2024-11-28 03:27:07,626 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 03:27:07,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:07,646 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 11 [2024-11-28 03:27:07,657 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 03:27:07,668 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 03:27:07,975 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 03:27:08,015 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 27 treesize of output 19 [2024-11-28 03:27:08,023 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 15 treesize of output 11 [2024-11-28 03:27:08,089 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 11 treesize of output 7 [2024-11-28 03:27:08,863 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 03:27:08,864 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 15 treesize of output 7 [2024-11-28 03:27:08,874 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 03:27:08,874 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 15 treesize of output 7 [2024-11-28 03:27:08,904 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-28 03:27:08,905 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 26 treesize of output 29 [2024-11-28 03:27:08,922 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 40 treesize of output 28 [2024-11-28 03:27:08,974 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-28 03:27:08,975 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 59 treesize of output 66 [2024-11-28 03:27:09,091 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-28 03:27:09,091 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 26 treesize of output 29 [2024-11-28 03:27:12,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:27:12,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 121 [2024-11-28 03:27:12,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:27:12,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 75 [2024-11-28 03:27:12,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:27:12,703 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 70 treesize of output 54 [2024-11-28 03:27:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:12,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:31,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992171933] [2024-11-28 03:27:31,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:27:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628974825] [2024-11-28 03:27:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628974825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:31,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:27:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 47 [2024-11-28 03:27:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723101048] [2024-11-28 03:27:31,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:31,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:27:31,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:31,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:27:31,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1987, Unknown=1, NotChecked=0, Total=2162 [2024-11-28 03:27:31,228 INFO L87 Difference]: Start difference. First operand 211 states and 255 transitions. Second operand has 47 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 34 states have internal predecessors, (59), 16 states have call successors, (18), 14 states have call predecessors, (18), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 03:27:35,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:27:40,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 03:29:52,241 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 225 DAG size of output: 221 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:29:55,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:30:57,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:31:02,973 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (select (select |c_#memory_int#2| |c_func_to_recursive_line_40_to_59_0_#in~b.base|) |c_func_to_recursive_line_40_to_59_0_#in~b.offset|)) (.cse10 (select (select |c_#memory_int#8| |c_func_to_recursive_line_40_to_59_0_#in~c.base|) |c_func_to_recursive_line_40_to_59_0_#in~c.offset|))) (let ((.cse0 (select (select |c_#memory_int#4| c_func_to_recursive_line_40_to_59_0_~x.base) c_func_to_recursive_line_40_to_59_0_~x.offset)) (.cse3 (select (select |c_#memory_int#5| |c_func_to_recursive_line_40_to_59_0_#in~y.base|) |c_func_to_recursive_line_40_to_59_0_#in~y.offset|)) (.cse2 (select (select |c_#memory_int#4| |c_func_to_recursive_line_40_to_59_0_#in~x.base|) |c_func_to_recursive_line_40_to_59_0_#in~x.offset|)) (.cse1 (select (select |c_#memory_int#2| c_func_to_recursive_line_40_to_59_0_~b.base) c_func_to_recursive_line_40_to_59_0_~b.offset)) (.cse8 (= .cse10 0)) (.cse9 (let ((.cse14 (forall ((|v_func_to_recursive_line_33_to_70_0_~#k~0.offset_BEFORE_CALL_3| Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_8 Int) (|v_func_to_recursive_line_33_to_70_0_~#k~0.base_BEFORE_CALL_3| Int) (v_func_to_recursive_line_33_to_70_0_~r.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~x.base_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~q.offset_BEFORE_CALL_6 Int) (v_func_to_recursive_line_33_to_70_0_~x.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~p.base_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~p.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~q.base_BEFORE_CALL_6 Int) (v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_8 Int) (v_func_to_recursive_line_33_to_70_0_~s.base_BEFORE_CALL_6 Int) (v_func_to_recursive_line_33_to_70_0_~r.base_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~s.offset_BEFORE_CALL_6 Int)) (let ((.cse23 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_8) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_8)) (.cse24 (select (select |c_#memory_int#4| v_func_to_recursive_line_33_to_70_0_~x.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~x.offset_BEFORE_CALL_5))) (= (let ((.cse22 (select (select |c_#memory_int#12| |v_func_to_recursive_line_33_to_70_0_~#k~0.base_BEFORE_CALL_3|) |v_func_to_recursive_line_33_to_70_0_~#k~0.offset_BEFORE_CALL_3|))) (+ .cse10 (* .cse22 .cse23 (select (select |c_#memory_int#6| v_func_to_recursive_line_33_to_70_0_~s.base_BEFORE_CALL_6) v_func_to_recursive_line_33_to_70_0_~s.offset_BEFORE_CALL_6)) (* .cse22 (select (select |c_#memory_int#11| v_func_to_recursive_line_33_to_70_0_~q.base_BEFORE_CALL_6) v_func_to_recursive_line_33_to_70_0_~q.offset_BEFORE_CALL_6) .cse24))) (+ (* .cse23 (select (select |c_#memory_int#9| v_func_to_recursive_line_33_to_70_0_~r.base_BEFORE_CALL_7) v_func_to_recursive_line_33_to_70_0_~r.offset_BEFORE_CALL_7)) (* .cse24 (select (select |c_#memory_int#7| v_func_to_recursive_line_33_to_70_0_~p.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~p.offset_BEFORE_CALL_7))))))) (.cse13 (select (select |c_old(#memory_int#8)| |c_func_to_recursive_line_40_to_59_0_#in~c.base|) |c_func_to_recursive_line_40_to_59_0_#in~c.offset|))) (and (or (< .cse13 .cse7) .cse14) (or (not (= .cse13 0)) .cse14) (forall ((|v_func_to_recursive_line_33_to_70_0_~#k~0.offset_BEFORE_CALL_3| Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_8 Int) (|v_func_to_recursive_line_33_to_70_0_~#k~0.base_BEFORE_CALL_3| Int) (v_func_to_recursive_line_33_to_70_0_~r.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~x.base_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~q.offset_BEFORE_CALL_6 Int) (v_func_to_recursive_line_33_to_70_0_~x.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~p.base_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~p.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~q.base_BEFORE_CALL_6 Int) (v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_8 Int) (v_func_to_recursive_line_33_to_70_0_~s.base_BEFORE_CALL_6 Int) (v_func_to_recursive_line_33_to_70_0_~r.base_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~s.offset_BEFORE_CALL_6 Int)) (let ((.cse18 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_8) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_8)) (.cse16 (select (select |c_#memory_int#4| v_func_to_recursive_line_33_to_70_0_~x.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~x.offset_BEFORE_CALL_5))) (let ((.cse19 (select (select |c_#memory_int#6| v_func_to_recursive_line_33_to_70_0_~s.base_BEFORE_CALL_6) v_func_to_recursive_line_33_to_70_0_~s.offset_BEFORE_CALL_6)) (.cse15 (select (select |c_#memory_int#11| v_func_to_recursive_line_33_to_70_0_~q.base_BEFORE_CALL_6) v_func_to_recursive_line_33_to_70_0_~q.offset_BEFORE_CALL_6)) (.cse20 (+ (* .cse18 (select (select |c_#memory_int#9| v_func_to_recursive_line_33_to_70_0_~r.base_BEFORE_CALL_7) v_func_to_recursive_line_33_to_70_0_~r.offset_BEFORE_CALL_7)) (* .cse16 (select (select |c_#memory_int#7| v_func_to_recursive_line_33_to_70_0_~p.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~p.offset_BEFORE_CALL_7))))) (or (not (= (let ((.cse17 (select (select |c_old(#memory_int#12)| |v_func_to_recursive_line_33_to_70_0_~#k~0.base_BEFORE_CALL_3|) |v_func_to_recursive_line_33_to_70_0_~#k~0.offset_BEFORE_CALL_3|))) (+ (* .cse15 .cse16 .cse17) (* .cse18 .cse19 .cse17) .cse13)) .cse20)) (= (let ((.cse21 (select (select |c_#memory_int#12| |v_func_to_recursive_line_33_to_70_0_~#k~0.base_BEFORE_CALL_3|) |v_func_to_recursive_line_33_to_70_0_~#k~0.offset_BEFORE_CALL_3|))) (+ .cse10 (* .cse21 .cse18 .cse19) (* .cse21 .cse15 .cse16))) .cse20)))))))) (.cse4 (select (select |c_#memory_int#5| c_func_to_recursive_line_40_to_59_0_~y.base) c_func_to_recursive_line_40_to_59_0_~y.offset))) (and (= (select (select |c_#memory_int#6| c_func_to_recursive_line_40_to_59_0_~s.base) c_func_to_recursive_line_40_to_59_0_~s.offset) 0) (= .cse0 .cse1) (<= 1 .cse0) (= (select (select |c_#memory_int#6| |c_func_to_recursive_line_40_to_59_0_#in~s.base|) |c_func_to_recursive_line_40_to_59_0_#in~s.offset|) 0) (<= (+ .cse2 1) .cse3) (exists ((v_func_to_recursive_line_33_to_70_0_~x.base_BEFORE_CALL_2 Int) (v_func_to_recursive_line_33_to_70_0_~x.offset_BEFORE_CALL_2 Int)) (<= 1 (select (select |c_#memory_int#4| v_func_to_recursive_line_33_to_70_0_~x.base_BEFORE_CALL_2) v_func_to_recursive_line_33_to_70_0_~x.offset_BEFORE_CALL_2))) (<= 1 .cse2) (<= (+ .cse0 1) .cse4) (or (exists ((v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5 Int)) (= .cse3 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5))) (exists ((v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5 Int)) (let ((.cse5 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5))) (and (not (= .cse5 0)) (exists ((v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7 Int)) (and (= .cse5 (select (select |c_#memory_int#2| v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7) v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7)) (not (= v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7 |c_func_to_recursive_line_40_to_59_0_#in~b.base|))))))) (exists ((v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5 Int)) (let ((.cse6 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5))) (and (exists ((v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7 Int)) (and (= .cse6 (select (select |c_#memory_int#2| v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7) v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7)) (not (= v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7 |c_func_to_recursive_line_40_to_59_0_#in~b.offset|)))) (not (= .cse6 0)))))) (= (select (select |c_#memory_int#11| |c_func_to_recursive_line_40_to_59_0_#in~q.base|) |c_func_to_recursive_line_40_to_59_0_#in~q.offset|) 1) (= .cse7 .cse2) (or .cse8 (< |c_func_to_recursive_line_40_to_59_0_#t~mem26| (+ |c_func_to_recursive_line_40_to_59_0_#t~mem25| 1)) .cse9) (= (select (select |c_#memory_int#11| c_func_to_recursive_line_40_to_59_0_~q.base) c_func_to_recursive_line_40_to_59_0_~q.offset) 1) (or (< .cse1 (+ (select (select |c_#memory_int#8| c_func_to_recursive_line_40_to_59_0_~c.base) c_func_to_recursive_line_40_to_59_0_~c.offset) 1)) .cse8 .cse9) (or .cse8 .cse9 (< .cse7 (+ .cse10 1))) (or (exists ((v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5 Int)) (= (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5) .cse4)) (exists ((v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5 Int)) (let ((.cse11 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5))) (and (not (= .cse11 0)) (exists ((v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7 Int)) (and (not (= c_func_to_recursive_line_40_to_59_0_~b.base v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7)) (= .cse11 (select (select |c_#memory_int#2| v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7) v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7))))))) (exists ((v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5 Int) (v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5 Int)) (let ((.cse12 (select (select |c_#memory_int#5| v_func_to_recursive_line_33_to_70_0_~y.base_BEFORE_CALL_5) v_func_to_recursive_line_33_to_70_0_~y.offset_BEFORE_CALL_5))) (and (exists ((v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7 Int) (v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7 Int)) (and (= .cse12 (select (select |c_#memory_int#2| v_func_to_recursive_line_33_to_70_0_~b.base_BEFORE_CALL_7) v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7)) (not (= v_func_to_recursive_line_33_to_70_0_~b.offset_BEFORE_CALL_7 c_func_to_recursive_line_40_to_59_0_~b.offset)))) (not (= .cse12 0))))))))) is different from false [2024-11-28 03:31:27,534 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, 1] [2024-11-28 03:31:29,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:31:40,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:32:01,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:32:04,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:32:27,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:32:55,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:32:59,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:33:03,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:33:29,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:33:58,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:34:08,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:34:22,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:34:43,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:34:47,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:34:53,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:34:57,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:16,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:24,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:29,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:35,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:43,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:47,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:51,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:35:56,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:36:00,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:36:04,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:36:08,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:36:13,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:36:47,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:37:04,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:37:08,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:37:39,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:37:43,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:37:59,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:38:01,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:38:06,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-28 03:38:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:11,937 INFO L93 Difference]: Finished difference Result 317 states and 388 transitions. [2024-11-28 03:38:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 03:38:11,938 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 34 states have internal predecessors, (59), 16 states have call successors, (18), 14 states have call predecessors, (18), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 46 [2024-11-28 03:38:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:11,946 INFO L225 Difference]: With dead ends: 317 [2024-11-28 03:38:11,949 INFO L226 Difference]: Without dead ends: 315 [2024-11-28 03:38:11,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3766 ImplicationChecksByTransitivity, 413.7s TimeCoverageRelationStatistics Valid=1145, Invalid=12640, Unknown=25, NotChecked=232, Total=14042 [2024-11-28 03:38:11,955 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 344 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 251 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 245.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:11,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 237 Invalid, 3254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [251 Valid, 2886 Invalid, 28 Unknown, 89 Unchecked, 245.0s Time] [2024-11-28 03:38:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-28 03:38:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 305. [2024-11-28 03:38:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 190 states have (on average 1.1210526315789473) internal successors, (213), 211 states have internal predecessors, (213), 69 states have call successors, (69), 37 states have call predecessors, (69), 45 states have return successors, (95), 64 states have call predecessors, (95), 68 states have call successors, (95) [2024-11-28 03:38:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 377 transitions. [2024-11-28 03:38:12,227 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 377 transitions. Word has length 46 [2024-11-28 03:38:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:12,228 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 377 transitions. [2024-11-28 03:38:12,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 34 states have internal predecessors, (59), 16 states have call successors, (18), 14 states have call predecessors, (18), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-28 03:38:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 377 transitions. [2024-11-28 03:38:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:38:12,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:12,234 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 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 03:38:12,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:12,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:38:12,435 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:12,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1094986925, now seen corresponding path program 1 times [2024-11-28 03:38:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:12,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018858332] [2024-11-28 03:38:12,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:12,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:38:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125090518] [2024-11-28 03:38:12,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:12,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:12,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:12,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:12,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:38:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:12,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 03:38:12,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:12,841 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 15 treesize of output 1 [2024-11-28 03:38:12,890 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 11 [2024-11-28 03:38:12,985 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 03:38:17,083 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 03:38:17,131 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 03:38:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:38:18,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:38:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018858332] [2024-11-28 03:38:22,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:38:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125090518] [2024-11-28 03:38:22,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125090518] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:22,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-11-28 03:38:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734070103] [2024-11-28 03:38:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:22,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:22,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:22,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:22,020 INFO L87 Difference]: Start difference. First operand 305 states and 377 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:38:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:26,818 INFO L93 Difference]: Finished difference Result 351 states and 438 transitions. [2024-11-28 03:38:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:38:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2024-11-28 03:38:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:26,823 INFO L225 Difference]: With dead ends: 351 [2024-11-28 03:38:26,823 INFO L226 Difference]: Without dead ends: 349 [2024-11-28 03:38:26,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:38:26,825 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:26,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 293 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 03:38:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-28 03:38:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 313. [2024-11-28 03:38:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 196 states have (on average 1.1122448979591837) internal successors, (218), 217 states have internal predecessors, (218), 69 states have call successors, (69), 39 states have call predecessors, (69), 47 states have return successors, (95), 64 states have call predecessors, (95), 68 states have call successors, (95) [2024-11-28 03:38:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 382 transitions. [2024-11-28 03:38:26,980 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 382 transitions. Word has length 47 [2024-11-28 03:38:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:26,980 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 382 transitions. [2024-11-28 03:38:26,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:38:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 382 transitions. [2024-11-28 03:38:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:38:26,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:26,981 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:26,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:27,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:38:27,182 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:27,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1612394486, now seen corresponding path program 2 times [2024-11-28 03:38:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423105440] [2024-11-28 03:38:27,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:38:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:27,233 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:38:27,233 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:38:36,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:36,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423105440] [2024-11-28 03:38:36,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423105440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:36,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898270219] [2024-11-28 03:38:36,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:38:36,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:36,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:36,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:36,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:38:36,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:38:36,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:36,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-28 03:38:36,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:36,606 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 03:38:36,670 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 03:38:38,199 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 03:38:38,250 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 21 [2024-11-28 03:38:38,299 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 40 treesize of output 17 [2024-11-28 03:38:38,553 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 15 treesize of output 1 [2024-11-28 03:38:39,427 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 11 treesize of output 7 [2024-11-28 03:38:41,467 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 27 treesize of output 19 [2024-11-28 03:38:41,519 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 40 treesize of output 17 [2024-11-28 03:38:41,568 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 40 treesize of output 17 [2024-11-28 03:38:41,826 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 25 treesize of output 17 [2024-11-28 03:38:41,926 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 15 treesize of output 1 [2024-11-28 03:38:44,380 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 21 treesize of output 13 [2024-11-28 03:38:44,427 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 03:38:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:38:44,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:38:55,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898270219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:55,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 14] total 24 [2024-11-28 03:38:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838116953] [2024-11-28 03:38:55,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:55,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:38:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:55,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:38:55,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:38:55,960 INFO L87 Difference]: Start difference. First operand 313 states and 382 transitions. Second operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 21 states have internal predecessors, (53), 8 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:39:04,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:39:10,453 WARN L539 Checker$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 03:39:36,795 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 03:39:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:50,760 INFO L93 Difference]: Finished difference Result 548 states and 691 transitions. [2024-11-28 03:39:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:39:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 21 states have internal predecessors, (53), 8 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 51 [2024-11-28 03:39:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:50,764 INFO L225 Difference]: With dead ends: 548 [2024-11-28 03:39:50,764 INFO L226 Difference]: Without dead ends: 386 [2024-11-28 03:39:50,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 89 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:39:50,767 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 68 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 25 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:50,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 259 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1411 Invalid, 3 Unknown, 0 Unchecked, 48.1s Time] [2024-11-28 03:39:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-28 03:39:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 364. [2024-11-28 03:39:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 232 states have (on average 1.0991379310344827) internal successors, (255), 252 states have internal predecessors, (255), 75 states have call successors, (75), 49 states have call predecessors, (75), 56 states have return successors, (106), 72 states have call predecessors, (106), 74 states have call successors, (106) [2024-11-28 03:39:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 436 transitions. [2024-11-28 03:39:50,960 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 436 transitions. Word has length 51 [2024-11-28 03:39:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:50,960 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 436 transitions. [2024-11-28 03:39:50,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 21 states have internal predecessors, (53), 8 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:39:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 436 transitions. [2024-11-28 03:39:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 03:39:50,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:50,962 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 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 03:39:50,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:51,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:39:51,166 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:51,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 63953117, now seen corresponding path program 1 times [2024-11-28 03:39:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437713009] [2024-11-28 03:39:51,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:51,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:39:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:57,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437713009] [2024-11-28 03:39:57,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437713009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:57,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:57,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:39:57,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921976886] [2024-11-28 03:39:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:57,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:39:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:57,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:39:57,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:39:57,118 INFO L87 Difference]: Start difference. First operand 364 states and 436 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 03:40:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:08,469 INFO L93 Difference]: Finished difference Result 687 states and 866 transitions. [2024-11-28 03:40:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:40:08,470 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 76 [2024-11-28 03:40:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:08,474 INFO L225 Difference]: With dead ends: 687 [2024-11-28 03:40:08,474 INFO L226 Difference]: Without dead ends: 418 [2024-11-28 03:40:08,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:40:08,476 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 29 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:08,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 219 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 03:40:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-28 03:40:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 410. [2024-11-28 03:40:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 261 states have (on average 1.0881226053639848) internal successors, (284), 281 states have internal predecessors, (284), 79 states have call successors, (79), 53 states have call predecessors, (79), 69 states have return successors, (128), 76 states have call predecessors, (128), 78 states have call successors, (128) [2024-11-28 03:40:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 491 transitions. [2024-11-28 03:40:08,709 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 491 transitions. Word has length 76 [2024-11-28 03:40:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:08,709 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 491 transitions. [2024-11-28 03:40:08,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 03:40:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 491 transitions. [2024-11-28 03:40:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:40:08,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:08,711 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:08,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:40:08,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:08,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash 457812220, now seen corresponding path program 1 times [2024-11-28 03:40:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244569145] [2024-11-28 03:40:08,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:40:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245695081] [2024-11-28 03:40:08,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:08,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:08,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:08,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ab7b53-9c6c-4068-952e-ff5973597cf8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:40:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:09,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-11-28 03:40:09,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:09,393 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 03:40:10,700 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 03:40:10,799 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 03:40:10,899 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 11 [2024-11-28 03:40:11,005 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 11 [2024-11-28 03:40:11,158 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 03:40:11,268 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 03:40:12,234 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 11 treesize of output 7 [2024-11-28 03:40:12,290 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 11 treesize of output 7 [2024-11-28 03:40:16,790 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 03:40:16,897 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 11 [2024-11-28 03:40:19,048 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 11 treesize of output 7 [2024-11-28 03:40:21,633 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 03:40:21,766 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 11 [2024-11-28 03:40:22,994 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 11 treesize of output 7 [2024-11-28 03:40:27,026 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 35 treesize of output 27 [2024-11-28 03:40:30,004 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 35 treesize of output 21 [2024-11-28 03:40:30,234 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 03:40:33,730 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 33 treesize of output 25 [2024-11-28 03:40:44,421 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 03:40:44,519 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 38 treesize of output 26 [2024-11-28 03:40:44,569 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 22 [2024-11-28 03:40:44,714 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 03:40:44,910 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 13 [2024-11-28 03:40:45,009 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 03:40:46,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:40:46,559 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 40 treesize of output 32 [2024-11-28 03:40:46,753 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 33 treesize of output 17 [2024-11-28 03:40:46,851 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 03:40:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:40:50,158 INFO L312 TraceCheckSpWp]: Computing backward predicates...