./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-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_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/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_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/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_003b686d-da6c-4803-a8fe-b2b0434ebafb/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 e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:15:47,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:15:47,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:15:47,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:15:47,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:15:47,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:15:47,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:15:47,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:15:47,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:15:47,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:15:47,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:15:47,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:15:47,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:15:47,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:15:47,447 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:15:47,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:15:47,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:15:47,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:15:47,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:15:47,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:15:47,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:15:47,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:15:47,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:15:47,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:15:47,449 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:15:47,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:15:47,450 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:15:47,450 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:15:47,450 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:15:47,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:47,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:47,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:47,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:47,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:15:47,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:47,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:47,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:47,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:47,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:15:47,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:15:47,458 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:15:47,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:15:47,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:15:47,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:15:47,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:15:47,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:15:47,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:15:47,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:15:47,459 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_003b686d-da6c-4803-a8fe-b2b0434ebafb/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 -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 [2024-11-27 20:15:47,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:15:47,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:15:47,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:15:47,818 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:15:47,819 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:15:47,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-11-27 20:15:51,560 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/data/c06739c11/77052657f8324b728354bcbf3e90c56e/FLAG4e0254265 [2024-11-27 20:15:51,918 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:15:51,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-11-27 20:15:51,936 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/data/c06739c11/77052657f8324b728354bcbf3e90c56e/FLAG4e0254265 [2024-11-27 20:15:51,990 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/data/c06739c11/77052657f8324b728354bcbf3e90c56e [2024-11-27 20:15:51,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:15:52,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:15:52,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:52,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:15:52,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:15:52,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:51" (1/1) ... [2024-11-27 20:15:52,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fca5bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52, skipping insertion in model container [2024-11-27 20:15:52,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:51" (1/1) ... [2024-11-27 20:15:52,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:15:52,265 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_003b686d-da6c-4803-a8fe-b2b0434ebafb/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2024-11-27 20:15:52,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:52,315 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:15:52,334 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_003b686d-da6c-4803-a8fe-b2b0434ebafb/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2024-11-27 20:15:52,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:52,375 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:15:52,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52 WrapperNode [2024-11-27 20:15:52,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:52,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:52,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:15:52,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:15:52,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,433 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-27 20:15:52,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:52,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:15:52,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:15:52,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:15:52,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,464 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 2, 5, 17, 4]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-11-27 20:15:52,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,478 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:15:52,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:15:52,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:15:52,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:15:52,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (1/1) ... [2024-11-27 20:15:52,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:52,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:15:52,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:15:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:15:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:15:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:15:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:15:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:15:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:15:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-11-27 20:15:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-11-27 20:15:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:15:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:15:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:15:52,740 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:15:52,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:15:53,017 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-27 20:15:53,017 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:15:53,033 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:15:53,033 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:15:53,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:53 BoogieIcfgContainer [2024-11-27 20:15:53,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:15:53,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:15:53,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:15:53,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:15:53,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:15:51" (1/3) ... [2024-11-27 20:15:53,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c88d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:53, skipping insertion in model container [2024-11-27 20:15:53,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:52" (2/3) ... [2024-11-27 20:15:53,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c88d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:53, skipping insertion in model container [2024-11-27 20:15:53,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:53" (3/3) ... [2024-11-27 20:15:53,050 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-11-27 20:15:53,071 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:15:53,073 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps3-ll.c that has 3 procedures, 23 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 20:15:53,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:15:53,167 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;@52cb6984, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:15:53,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:15:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 20:15:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:15:53,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:53,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:53,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:53,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1179015159, now seen corresponding path program 1 times [2024-11-27 20:15:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074464469] [2024-11-27 20:15:53,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:53,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:15:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570364585] [2024-11-27 20:15:53,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:53,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:53,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:53,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:53,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:15:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:53,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 20:15:53,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:53,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:53,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:53,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:53,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074464469] [2024-11-27 20:15:53,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:15:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570364585] [2024-11-27 20:15:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570364585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:53,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:15:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997643097] [2024-11-27 20:15:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:53,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:15:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:54,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:15:54,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:15:54,005 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:54,337 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2024-11-27 20:15:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:15:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-27 20:15:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:54,350 INFO L225 Difference]: With dead ends: 55 [2024-11-27 20:15:54,350 INFO L226 Difference]: Without dead ends: 31 [2024-11-27 20:15:54,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:15:54,393 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:54,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 107 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:15:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-27 20:15:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-27 20:15:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-27 20:15:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-27 20:15:54,448 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2024-11-27 20:15:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:54,448 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-27 20:15:54,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-27 20:15:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:15:54,450 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:54,450 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:54,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:15:54,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:15:54,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:54,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1547283466, now seen corresponding path program 1 times [2024-11-27 20:15:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584924409] [2024-11-27 20:15:54,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:15:54,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517733977] [2024-11-27 20:15:54,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:54,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:54,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:54,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:15:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:55,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 20:15:55,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:55,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:55,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:55,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-27 20:15:55,409 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 [2024-11-27 20:15:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:55,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:15:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584924409] [2024-11-27 20:15:56,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:15:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517733977] [2024-11-27 20:15:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517733977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:56,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:15:56,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-11-27 20:15:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147002875] [2024-11-27 20:15:56,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:56,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:15:56,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:56,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:15:56,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:15:56,092 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:15:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:57,018 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-27 20:15:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:15:57,021 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-27 20:15:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:57,025 INFO L225 Difference]: With dead ends: 58 [2024-11-27 20:15:57,025 INFO L226 Difference]: Without dead ends: 52 [2024-11-27 20:15:57,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:15:57,029 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 50 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:57,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 125 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:15:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-27 20:15:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2024-11-27 20:15:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-27 20:15:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-27 20:15:57,070 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 19 [2024-11-27 20:15:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:57,070 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-27 20:15:57,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:15:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-27 20:15:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:15:57,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:57,073 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:57,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:57,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:57,278 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:57,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1773891863, now seen corresponding path program 1 times [2024-11-27 20:15:57,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:57,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958238482] [2024-11-27 20:15:57,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:15:57,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624587461] [2024-11-27 20:15:57,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:57,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:57,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:57,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:57,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:15:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:57,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:15:57,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:57,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:57,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:57,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:57,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:57,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958238482] [2024-11-27 20:15:57,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:15:57,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624587461] [2024-11-27 20:15:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624587461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:57,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:57,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:15:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833433746] [2024-11-27 20:15:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:57,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:15:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:57,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:15:57,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:57,778 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:15:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:57,976 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2024-11-27 20:15:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:15:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-27 20:15:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:57,978 INFO L225 Difference]: With dead ends: 52 [2024-11-27 20:15:57,978 INFO L226 Difference]: Without dead ends: 44 [2024-11-27 20:15:57,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:15:57,980 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:57,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:15:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-27 20:15:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-27 20:15:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-27 20:15:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2024-11-27 20:15:58,009 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 19 [2024-11-27 20:15:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:58,009 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2024-11-27 20:15:58,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:15:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-11-27 20:15:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-27 20:15:58,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:58,011 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:58,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:58,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:58,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:58,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash -362955913, now seen corresponding path program 1 times [2024-11-27 20:15:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213999827] [2024-11-27 20:15:58,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:15:58,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086656126] [2024-11-27 20:15:58,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:58,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:58,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:58,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:58,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:15:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:58,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-27 20:15:58,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:58,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:58,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:15:58,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:58,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-27 20:15:59,537 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 [2024-11-27 20:15:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:15:59,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213999827] [2024-11-27 20:16:07,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:16:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086656126] [2024-11-27 20:16:07,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086656126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:07,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:16:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-27 20:16:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160248848] [2024-11-27 20:16:07,591 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:07,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:16:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:07,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:16:07,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:16:07,593 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 20:16:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:08,791 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-11-27 20:16:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:16:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2024-11-27 20:16:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:08,795 INFO L225 Difference]: With dead ends: 50 [2024-11-27 20:16:08,795 INFO L226 Difference]: Without dead ends: 40 [2024-11-27 20:16:08,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:16:08,797 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:08,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 79 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:16:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-27 20:16:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-27 20:16:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-27 20:16:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-27 20:16:08,817 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 31 [2024-11-27 20:16:08,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:08,818 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-27 20:16:08,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 20:16:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-27 20:16:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-27 20:16:08,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:08,821 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:08,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:09,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:09,022 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:09,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 773138775, now seen corresponding path program 2 times [2024-11-27 20:16:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:09,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131903415] [2024-11-27 20:16:09,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:09,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:16:09,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:16:09,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213799648] [2024-11-27 20:16:09,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:09,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:09,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:09,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:16:09,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:16:09,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:09,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-27 20:16:09,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:09,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:09,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:09,902 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 31 treesize of output 23 [2024-11-27 20:16:09,913 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 [2024-11-27 20:16:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:16:10,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:16,064 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 46 treesize of output 42 [2024-11-27 20:16:16,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2024-11-27 20:16:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131903415] [2024-11-27 20:16:20,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:16:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213799648] [2024-11-27 20:16:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213799648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:20,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:16:20,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-27 20:16:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670646953] [2024-11-27 20:16:20,274 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:20,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:16:20,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:20,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:16:20,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=253, Unknown=1, NotChecked=0, Total=306 [2024-11-27 20:16:20,277 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 13 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:16:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:20,973 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-27 20:16:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:16:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 43 [2024-11-27 20:16:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:20,975 INFO L225 Difference]: With dead ends: 48 [2024-11-27 20:16:20,975 INFO L226 Difference]: Without dead ends: 42 [2024-11-27 20:16:20,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=64, Invalid=315, Unknown=1, NotChecked=0, Total=380 [2024-11-27 20:16:20,980 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:20,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 84 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:16:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-27 20:16:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-27 20:16:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-27 20:16:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-27 20:16:21,010 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2024-11-27 20:16:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:21,011 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-27 20:16:21,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:16:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-27 20:16:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-27 20:16:21,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:21,015 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:21,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:16:21,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:21,217 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:21,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1797888695, now seen corresponding path program 3 times [2024-11-27 20:16:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614551903] [2024-11-27 20:16:21,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:16:21,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:21,394 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 20:16:21,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:16:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935510733] [2024-11-27 20:16:21,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:16:21,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:21,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:21,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:16:22,143 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:16:22,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:22,149 WARN L254 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 226 conjuncts are in the unsatisfiable core [2024-11-27 20:16:22,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:22,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:22,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:16:22,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:22,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:23,356 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 13 treesize of output 9 [2024-11-27 20:16:23,813 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 13 treesize of output 9 [2024-11-27 20:16:24,760 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 [2024-11-27 20:16:24,772 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 [2024-11-27 20:16:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 20:16:25,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:38,816 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 60 treesize of output 56 [2024-11-27 20:16:38,832 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 56 treesize of output 52 [2024-11-27 20:16:38,851 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 52 treesize of output 28 [2024-11-27 20:16:42,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:42,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614551903] [2024-11-27 20:16:42,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:16:42,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935510733] [2024-11-27 20:16:42,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935510733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:42,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:16:42,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-27 20:16:42,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075350556] [2024-11-27 20:16:42,838 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:42,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:16:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:42,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:16:42,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=733, Unknown=1, NotChecked=0, Total=812 [2024-11-27 20:16:42,841 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 21 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 20:16:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:44,779 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2024-11-27 20:16:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:16:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 55 [2024-11-27 20:16:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:44,782 INFO L225 Difference]: With dead ends: 50 [2024-11-27 20:16:44,782 INFO L226 Difference]: Without dead ends: 44 [2024-11-27 20:16:44,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=126, Invalid=1133, Unknown=1, NotChecked=0, Total=1260 [2024-11-27 20:16:44,784 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:44,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:16:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-27 20:16:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-27 20:16:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-27 20:16:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-27 20:16:44,804 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 55 [2024-11-27 20:16:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:44,805 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-27 20:16:44,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 20:16:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-27 20:16:44,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:16:44,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:44,807 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:44,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:16:45,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:16:45,008 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:45,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 927657879, now seen corresponding path program 4 times [2024-11-27 20:16:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:45,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761346805] [2024-11-27 20:16:45,009 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:16:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:45,238 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:16:45,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-27 20:16:45,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056101382] [2024-11-27 20:16:45,244 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:16:45,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:45,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:45,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:45,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:16:45,813 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:16:45,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:45,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-27 20:16:45,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:45,962 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 17 treesize of output 9 [2024-11-27 20:16:46,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-27 20:16:46,639 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 17 treesize of output 9 [2024-11-27 20:16:46,820 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 88 treesize of output 40 [2024-11-27 20:16:46,837 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 [2024-11-27 20:16:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 55 proven. 35 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:16:46,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:49,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 262 [2024-11-27 20:16:49,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:16:49,405 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 267 treesize of output 158 [2024-11-27 20:16:49,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:16:49,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 87 treesize of output 89 [2024-11-27 20:16:50,490 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 266 treesize of output 262 [2024-11-27 20:16:50,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:16:50,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 179 treesize of output 183 [2024-11-27 20:16:58,594 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int#3| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse0 (select .cse2 c_func_to_recursive_line_26_to_34_0_~y.offset))) (or (not (= (mod (+ (* 3 .cse0 .cse0) .cse0 (* 2 .cse0 .cse0 .cse0)) 6) 0)) (and (= (+ (* .cse0 37) (* 15 (* .cse0 .cse0)) 30 (* 2 (* .cse0 .cse0 .cse0))) (let ((.cse1 (select (select (store |c_#memory_int#3| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse2 c_func_to_recursive_line_26_to_34_0_~y.offset (+ 2 .cse0))) |c_func_to_recursive_line_26_to_34_0_#in~y.base|) |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* (* .cse1 .cse1) 3) .cse1 (* (* .cse1 .cse1 .cse1) 2)))) (= |c_func_to_recursive_line_26_to_34_0_#in~x.base| c_func_to_recursive_line_26_to_34_0_~x.base) (= c_func_to_recursive_line_26_to_34_0_~x.offset |c_func_to_recursive_line_26_to_34_0_#in~x.offset|))))) is different from false [2024-11-27 20:17:10,647 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:17:14,819 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse1 (select .cse4 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (and (or (forall ((|v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27| Int)) (= (let ((.cse0 (select (select |c_#memory_int#3| |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* (* .cse0 .cse0 .cse0) 2) (* 3 (* .cse0 .cse0)) .cse0)) (* (select (select |c_#memory_int#2| |v_func_to_recursive_line_26_to_34_0_#in~x.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~x.offset_BEFORE_CALL_27|) 6))) (= (mod (+ (* 3 .cse1 .cse1) .cse1 (* 2 .cse1 .cse1 .cse1)) 6) 0)) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27| Int)) (or (= (let ((.cse2 (select (select |c_#memory_int#3| |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* (* .cse2 .cse2 .cse2) 2) (* 3 (* .cse2 .cse2)) .cse2)) (* (select (select |c_#memory_int#2| |c_func_to_recursive_line_26_to_34_0_#in~x.base|) |c_func_to_recursive_line_26_to_34_0_#in~x.offset|) 6)) (not (= (let ((.cse3 (select (select (store |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse4 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 2 .cse1))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* 2 (* .cse3 .cse3 .cse3)) .cse3 (* (* .cse3 .cse3) 3))) (+ 30 (* (* .cse1 .cse1 .cse1) 2) (* 15 (* .cse1 .cse1)) (* .cse1 37))))))))) is different from true [2024-11-27 20:17:26,857 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:17:43,623 WARN L286 SmtUtils]: Spent 16.24s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-27 20:17:43,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:43,624 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 735 treesize of output 739 [2024-11-27 20:18:09,488 WARN L286 SmtUtils]: Spent 25.85s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-27 20:18:09,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:09,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 775 treesize of output 793 [2024-11-27 20:18:29,534 WARN L286 SmtUtils]: Spent 16.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:18:37,544 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:18:53,561 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:19:09,577 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:19:25,595 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:19:33,604 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:19:45,968 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:19:53,979 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:20:06,157 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_int#3| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse0 (select .cse6 c_func_to_recursive_line_26_to_34_0_~y.offset))) (or (not (= (mod (+ (* 5 .cse0) (* 3 .cse0 .cse0) (* .cse0 .cse0 .cse0 4)) 6) 0)) (let ((.cse9 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse7 (select .cse9 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (let ((.cse3 (store |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse9 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 2 .cse7)))) (.cse4 (+ 30 (* (* .cse7 .cse7 .cse7) 2) (* 15 (* .cse7 .cse7)) (* .cse7 37)))) (let ((.cse1 (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27| Int)) (not (= (let ((.cse8 (select (select .cse3 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* 2 (* .cse8 .cse8 .cse8)) .cse8 (* (* .cse8 .cse8) 3))) .cse4))))) (and (or .cse1 (= |c_func_to_recursive_line_26_to_34_0_#in~x.base| c_func_to_recursive_line_26_to_34_0_~x.base)) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27| Int)) (or (not (= (let ((.cse2 (select (select .cse3 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* 2 (* .cse2 .cse2 .cse2)) .cse2 (* (* .cse2 .cse2) 3))) .cse4)) (= (let ((.cse5 (select (select (store |c_#memory_int#3| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse6 c_func_to_recursive_line_26_to_34_0_~y.offset (+ .cse0 1))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ .cse5 (* 2 (* .cse5 .cse5 .cse5)) (* 3 (* .cse5 .cse5)))) (+ (* 9 (* .cse0 .cse0)) (* .cse0 13) 6 (* 2 (* .cse0 .cse0 .cse0)))))) (= (mod (+ (* 3 .cse7 .cse7) .cse7 (* 2 .cse7 .cse7 .cse7)) 6) 0) (or .cse1 (= c_func_to_recursive_line_26_to_34_0_~x.offset |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)))))))))) is different from false [2024-11-27 20:20:10,162 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_int#3| c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse0 (select .cse6 c_func_to_recursive_line_26_to_34_0_~y.offset))) (or (not (= (mod (+ (* 5 .cse0) (* 3 .cse0 .cse0) (* .cse0 .cse0 .cse0 4)) 6) 0)) (let ((.cse9 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|))) (let ((.cse7 (select .cse9 |c_func_to_recursive_line_26_to_34_0_#in~y.offset|))) (let ((.cse3 (store |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse9 |c_func_to_recursive_line_26_to_34_0_#in~y.offset| (+ 2 .cse7)))) (.cse4 (+ 30 (* (* .cse7 .cse7 .cse7) 2) (* 15 (* .cse7 .cse7)) (* .cse7 37)))) (let ((.cse1 (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27| Int)) (not (= (let ((.cse8 (select (select .cse3 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* 2 (* .cse8 .cse8 .cse8)) .cse8 (* (* .cse8 .cse8) 3))) .cse4))))) (and (or .cse1 (= |c_func_to_recursive_line_26_to_34_0_#in~x.base| c_func_to_recursive_line_26_to_34_0_~x.base)) (forall ((|v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27| Int) (|v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27| Int)) (or (not (= (let ((.cse2 (select (select .cse3 |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ (* 2 (* .cse2 .cse2 .cse2)) .cse2 (* (* .cse2 .cse2) 3))) .cse4)) (= (let ((.cse5 (select (select (store |c_#memory_int#3| c_func_to_recursive_line_26_to_34_0_~y.base (store .cse6 c_func_to_recursive_line_26_to_34_0_~y.offset (+ .cse0 1))) |v_func_to_recursive_line_26_to_34_0_#in~y.base_BEFORE_CALL_27|) |v_func_to_recursive_line_26_to_34_0_#in~y.offset_BEFORE_CALL_27|))) (+ .cse5 (* 2 (* .cse5 .cse5 .cse5)) (* 3 (* .cse5 .cse5)))) (+ (* 9 (* .cse0 .cse0)) (* .cse0 13) 6 (* 2 (* .cse0 .cse0 .cse0)))))) (= (mod (+ (* 3 .cse7 .cse7) .cse7 (* 2 .cse7 .cse7 .cse7)) 6) 0) (or .cse1 (= c_func_to_recursive_line_26_to_34_0_~x.offset |c_func_to_recursive_line_26_to_34_0_#in~x.offset|)))))))))) is different from true [2024-11-27 20:20:10,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761346805] [2024-11-27 20:20:10,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:20:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056101382] [2024-11-27 20:20:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056101382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:20:10,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:20:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-27 20:20:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522493252] [2024-11-27 20:20:10,165 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:20:10,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:20:10,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:10,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:20:10,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=365, Unknown=4, NotChecked=120, Total=552 [2024-11-27 20:20:10,167 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 19 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 6 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-27 20:20:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:10,850 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-27 20:20:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:20:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 6 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 67 [2024-11-27 20:20:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:10,852 INFO L225 Difference]: With dead ends: 44 [2024-11-27 20:20:10,852 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:20:10,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=118, Invalid=646, Unknown=4, NotChecked=162, Total=930 [2024-11-27 20:20:10,854 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:10,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 98 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:20:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:20:10,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:20:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:20:10,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2024-11-27 20:20:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:10,857 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:20:10,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 6 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-27 20:20:10,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:20:10,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:20:10,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:20:10,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:20:11,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:20:11,067 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-11-27 20:20:11,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 20:20:25,166 WARN L286 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 175 DAG size of output: 42 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-27 20:20:28,914 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:20:28,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:20:28 BoogieIcfgContainer [2024-11-27 20:20:28,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:20:28,922 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:20:28,922 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:20:28,923 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:20:28,924 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:53" (3/4) ... [2024-11-27 20:20:28,927 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:20:28,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_26_to_34_0 [2024-11-27 20:20:28,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-27 20:20:28,941 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-11-27 20:20:28,941 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-27 20:20:28,941 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 20:20:28,942 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:20:29,068 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:20:29,068 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:20:29,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:20:29,070 INFO L158 Benchmark]: Toolchain (without parser) took 277075.05ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 107.1MB in the beginning and 251.1MB in the end (delta: -144.0MB). Peak memory consumption was 138.3MB. Max. memory is 16.1GB. [2024-11-27 20:20:29,070 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 167.8MB. Free memory is still 104.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:20:29,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.12ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 95.6MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:20:29,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.02ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:20:29,073 INFO L158 Benchmark]: Boogie Preprocessor took 58.84ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 92.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:20:29,073 INFO L158 Benchmark]: RCFGBuilder took 541.46ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 79.3MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:20:29,074 INFO L158 Benchmark]: TraceAbstraction took 275883.32ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 79.0MB in the beginning and 255.4MB in the end (delta: -176.4MB). Peak memory consumption was 113.2MB. Max. memory is 16.1GB. [2024-11-27 20:20:29,074 INFO L158 Benchmark]: Witness Printer took 146.65ms. Allocated memory is still 427.8MB. Free memory was 255.4MB in the beginning and 251.1MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:20:29,077 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 167.8MB. Free memory is still 104.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.12ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 95.6MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.02ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.84ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 92.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 541.46ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 79.3MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 275883.32ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 79.0MB in the beginning and 255.4MB in the end (delta: -176.4MB). Peak memory consumption was 113.2MB. Max. memory is 16.1GB. * Witness Printer took 146.65ms. Allocated memory is still 427.8MB. Free memory was 255.4MB in the beginning and 251.1MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 257.9s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 633 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 543 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1285 IncrementalHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 90 mSDtfsCounter, 1285 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 351 GetRequests, 192 SyntacticMatches, 7 SemanticMatches, 152 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 44.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 246.7s InterpolantComputationTime, 486 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 254 ConstructedInterpolants, 4 QuantifiedInterpolants, 4873 SizeOfPredicates, 169 NumberOfNonLiveVariables, 1941 ConjunctsInSsa, 704 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 170/270 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 20:20:29,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003b686d-da6c-4803-a8fe-b2b0434ebafb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE