./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound50.i --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_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/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_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/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_68af6d80-11c1-467c-ba24-3b40770af813/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 698c604312f3eb09bef7f8f6e092d43de99877a411ec8f3c76598811466d02b7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:30:17,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:30:17,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:30:17,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:30:17,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:30:17,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:30:17,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:30:17,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:30:17,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:30:17,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:30:17,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:30:17,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:30:17,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:30:17,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:30:17,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:30:17,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:30:17,657 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:30:17,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:17,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:17,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:17,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:30:17,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:30:17,659 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:30:17,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:30:17,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:30:17,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:30:17,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:30:17,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:30:17,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:30:17,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:30:17,661 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_68af6d80-11c1-467c-ba24-3b40770af813/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 -> 698c604312f3eb09bef7f8f6e092d43de99877a411ec8f3c76598811466d02b7 [2024-11-28 02:30:18,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:30:18,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:30:18,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:30:18,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:30:18,016 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:30:18,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound50.i [2024-11-28 02:30:20,975 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/data/4281b8c67/b7b54e3aa3fe47559710fc37584d00a2/FLAGa74443e10 [2024-11-28 02:30:21,305 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:30:21,306 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound50.i [2024-11-28 02:30:21,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/data/4281b8c67/b7b54e3aa3fe47559710fc37584d00a2/FLAGa74443e10 [2024-11-28 02:30:21,545 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/data/4281b8c67/b7b54e3aa3fe47559710fc37584d00a2 [2024-11-28 02:30:21,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:30:21,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:30:21,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:30:21,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:30:21,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:30:21,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b877f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21, skipping insertion in model container [2024-11-28 02:30:21,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:30:21,757 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_68af6d80-11c1-467c-ba24-3b40770af813/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound50.i[951,964] [2024-11-28 02:30:21,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:30:21,787 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:30:21,802 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_68af6d80-11c1-467c-ba24-3b40770af813/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound50.i[951,964] [2024-11-28 02:30:21,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:30:21,825 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:30:21,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21 WrapperNode [2024-11-28 02:30:21,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:30:21,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:30:21,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:30:21,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:30:21,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,865 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-11-28 02:30:21,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:30:21,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:30:21,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:30:21,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:30:21,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,889 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:30:21,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,892 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:30:21,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:30:21,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:30:21,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:30:21,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (1/1) ... [2024-11-28 02:30:21,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:21,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:30:21,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:30:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:30:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:30:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:30:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:30:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:30:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:30:22,072 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:30:22,075 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:30:22,289 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 02:30:22,289 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:30:22,301 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:30:22,301 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:30:22,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:22 BoogieIcfgContainer [2024-11-28 02:30:22,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:30:22,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:30:22,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:30:22,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:30:22,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:30:21" (1/3) ... [2024-11-28 02:30:22,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddd6820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:30:22, skipping insertion in model container [2024-11-28 02:30:22,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:21" (2/3) ... [2024-11-28 02:30:22,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddd6820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:30:22, skipping insertion in model container [2024-11-28 02:30:22,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:22" (3/3) ... [2024-11-28 02:30:22,315 INFO L128 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound50.i [2024-11-28 02:30:22,330 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:30:22,332 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG divbin2_valuebound50.i that has 2 procedures, 19 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:30:22,403 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:30:22,420 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;@707209f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:30:22,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:30:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:30:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:30:22,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:22,433 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:22,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:22,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash -588910976, now seen corresponding path program 1 times [2024-11-28 02:30:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:22,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231197625] [2024-11-28 02:30:22,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231197625] [2024-11-28 02:30:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231197625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:22,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:30:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013381990] [2024-11-28 02:30:22,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:22,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:30:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:22,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:30:22,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:30:22,662 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:22,691 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2024-11-28 02:30:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:30:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 02:30:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:22,701 INFO L225 Difference]: With dead ends: 35 [2024-11-28 02:30:22,702 INFO L226 Difference]: Without dead ends: 15 [2024-11-28 02:30:22,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:30:22,709 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:22,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:30:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-28 02:30:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-28 02:30:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:30:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-28 02:30:22,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 9 [2024-11-28 02:30:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:22,765 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-28 02:30:22,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-28 02:30:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:30:22,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:22,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:22,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:30:22,767 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:22,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1189790470, now seen corresponding path program 1 times [2024-11-28 02:30:22,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:22,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729457093] [2024-11-28 02:30:22,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:22,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:30:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318671754] [2024-11-28 02:30:22,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:22,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:22,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:30:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:22,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:30:22,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:23,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:30:23,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:23,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729457093] [2024-11-28 02:30:23,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:30:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318671754] [2024-11-28 02:30:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318671754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:23,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:30:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960150206] [2024-11-28 02:30:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:23,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:30:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:23,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:30:23,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:23,074 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:23,185 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-28 02:30:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:23,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 02:30:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:23,187 INFO L225 Difference]: With dead ends: 25 [2024-11-28 02:30:23,187 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 02:30:23,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:30:23,188 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:23,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 37 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:30:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 02:30:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-28 02:30:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:30:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-28 02:30:23,203 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2024-11-28 02:30:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:23,203 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-28 02:30:23,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-28 02:30:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 02:30:23,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:23,205 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:23,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:30:23,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:23,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:23,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1867263467, now seen corresponding path program 1 times [2024-11-28 02:30:23,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:23,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743316317] [2024-11-28 02:30:23,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:23,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743316317] [2024-11-28 02:30:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743316317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:23,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370457608] [2024-11-28 02:30:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:23,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:23,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:23,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:23,869 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:30:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:23,910 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-11-28 02:30:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-28 02:30:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:23,913 INFO L225 Difference]: With dead ends: 42 [2024-11-28 02:30:23,913 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 02:30:23,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:23,914 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:23,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:30:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 02:30:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 02:30:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:30:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-28 02:30:23,929 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2024-11-28 02:30:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:23,930 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-28 02:30:23,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:30:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-28 02:30:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 02:30:23,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:23,931 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:23,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:30:23,932 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:23,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1768656129, now seen corresponding path program 1 times [2024-11-28 02:30:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:23,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411411762] [2024-11-28 02:30:23,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:23,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:30:24,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489491256] [2024-11-28 02:30:24,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:24,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:24,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:24,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:30:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:24,138 WARN L254 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:30:24,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:24,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:39,819 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:30:55,856 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:31:11,878 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:31:15,896 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (< .cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 2 .cse2 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse0) (< (* 2 .cse2) (+ .cse1 1)))) is different from true [2024-11-28 02:31:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 02:31:15,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:15,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411411762] [2024-11-28 02:31:15,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:31:15,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489491256] [2024-11-28 02:31:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489491256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:15,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:31:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2024-11-28 02:31:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726373489] [2024-11-28 02:31:15,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:15,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:31:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:15,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:31:15,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=243, Unknown=1, NotChecked=32, Total=342 [2024-11-28 02:31:15,906 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:31:21,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:25,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:26,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:27,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:31,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:35,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:40,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:41,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:44,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:31:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:45,018 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-11-28 02:31:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:31:45,020 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-28 02:31:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:45,023 INFO L225 Difference]: With dead ends: 66 [2024-11-28 02:31:45,023 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 02:31:45,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=104, Invalid=361, Unknown=1, NotChecked=40, Total=506 [2024-11-28 02:31:45,027 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:45,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 68 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 5 Unknown, 47 Unchecked, 28.3s Time] [2024-11-28 02:31:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 02:31:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-28 02:31:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:31:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-28 02:31:45,059 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2024-11-28 02:31:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:45,060 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-28 02:31:45,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:31:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-28 02:31:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 02:31:45,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:45,063 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:45,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:45,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:45,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:45,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 828366721, now seen corresponding path program 2 times [2024-11-28 02:31:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:45,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810011122] [2024-11-28 02:31:45,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:45,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:45,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 02:31:45,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141081769] [2024-11-28 02:31:45,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:45,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:45,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:31:45,421 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:45,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:45,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:31:45,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:31:45,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:50,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:50,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810011122] [2024-11-28 02:31:50,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:31:50,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141081769] [2024-11-28 02:31:50,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141081769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:50,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:31:50,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 02:31:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327856384] [2024-11-28 02:31:50,453 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:50,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:31:50,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:50,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:31:50,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=169, Unknown=1, NotChecked=0, Total=210 [2024-11-28 02:31:50,455 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:31:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:50,665 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2024-11-28 02:31:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:31:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-28 02:31:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:50,669 INFO L225 Difference]: With dead ends: 59 [2024-11-28 02:31:50,669 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 02:31:50,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=47, Invalid=192, Unknown=1, NotChecked=0, Total=240 [2024-11-28 02:31:50,672 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:50,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:31:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 02:31:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2024-11-28 02:31:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:31:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-28 02:31:50,710 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2024-11-28 02:31:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:50,711 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-28 02:31:50,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:31:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-28 02:31:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:31:50,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:50,713 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:50,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:50,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:50,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:50,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1144383418, now seen corresponding path program 3 times [2024-11-28 02:31:50,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:50,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211763544] [2024-11-28 02:31:50,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:50,995 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:31:50,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:31:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211763544] [2024-11-28 02:31:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211763544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136717846] [2024-11-28 02:31:51,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:51,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:51,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:51,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:51,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:31:51,747 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:31:51,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:51,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:31:51,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:31:51,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:31:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136717846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:52,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2024-11-28 02:31:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238467573] [2024-11-28 02:31:52,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:52,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:31:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:52,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:31:52,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:31:52,288 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:31:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:52,443 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-11-28 02:31:52,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:31:52,444 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 24 [2024-11-28 02:31:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:52,445 INFO L225 Difference]: With dead ends: 67 [2024-11-28 02:31:52,445 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 02:31:52,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:31:52,447 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:52,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 78 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:31:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 02:31:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2024-11-28 02:31:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:31:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 02:31:52,464 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 24 [2024-11-28 02:31:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:52,464 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 02:31:52,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:31:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-28 02:31:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:31:52,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:52,466 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:52,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:31:52,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:31:52,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:52,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash -576063834, now seen corresponding path program 4 times [2024-11-28 02:31:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:52,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049584088] [2024-11-28 02:31:52,668 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:31:52,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:52,714 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:31:52,714 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 02:31:52,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896259844] [2024-11-28 02:31:52,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:31:52,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:52,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:52,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:52,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:31:52,905 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:31:52,906 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:52,908 WARN L254 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 02:31:52,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:31:53,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:28,757 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:32:49,178 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:32:57,223 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:33:13,281 WARN L286 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:33:29,316 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:33:33,325 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse1 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (< .cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (= (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296) (* 2 .cse1)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~b~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (< (* .cse1 4) (+ .cse2 1)) (< .cse2 (* 2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648))))) is different from true [2024-11-28 02:33:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-28 02:33:33,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049584088] [2024-11-28 02:33:33,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:33:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896259844] [2024-11-28 02:33:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896259844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:33,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:33:33,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2024-11-28 02:33:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831072562] [2024-11-28 02:33:33,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:33,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:33:33,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:33,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:33:33,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=488, Unknown=3, NotChecked=46, Total=650 [2024-11-28 02:33:33,332 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 26 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:33:34,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:34:13,357 WARN L286 SmtUtils]: Spent 36.52s on a formula simplification. DAG size of input: 63 DAG size of output: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:34:17,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:34:21,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:34:25,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:35:31,479 WARN L286 SmtUtils]: Spent 59.58s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:35:35,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:36:07,305 WARN L286 SmtUtils]: Spent 30.66s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:36:11,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:36:36,318 WARN L286 SmtUtils]: Spent 19.47s on a formula simplification. DAG size of input: 59 DAG size of output: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:36:39,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:36:43,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:36:47,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:36:54,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:36:58,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:37:14,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:38:03,048 WARN L286 SmtUtils]: Spent 38.95s on a formula simplification. DAG size of input: 48 DAG size of output: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:38:06,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:38:11,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:38:15,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:38:19,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:38:23,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:38:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:23,393 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2024-11-28 02:38:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:38:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2024-11-28 02:38:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:23,402 INFO L225 Difference]: With dead ends: 89 [2024-11-28 02:38:23,402 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 02:38:23,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 246.8s TimeCoverageRelationStatistics Valid=273, Invalid=1053, Unknown=10, NotChecked=70, Total=1406 [2024-11-28 02:38:23,405 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 43 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 64.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:23,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 73 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 237 Invalid, 13 Unknown, 63 Unchecked, 64.0s Time] [2024-11-28 02:38:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 02:38:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2024-11-28 02:38:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 43 states have internal predecessors, (48), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:38:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-28 02:38:23,429 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 25 [2024-11-28 02:38:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:23,430 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-28 02:38:23,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:38:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-28 02:38:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 02:38:23,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:23,432 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:23,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:38:23,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:38:23,633 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:23,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 137904826, now seen corresponding path program 5 times [2024-11-28 02:38:23,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886070368] [2024-11-28 02:38:23,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:38:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:23,761 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 02:38:23,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 02:38:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907706835] [2024-11-28 02:38:23,763 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:38:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:23,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:23,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:23,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68af6d80-11c1-467c-ba24-3b40770af813/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:38:24,049 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 02:38:24,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:38:24,056 WARN L254 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 02:38:24,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:38:24,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:04,969 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:39:25,054 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:39:45,105 WARN L286 SmtUtils]: Spent 20.05s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:40:05,156 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:40:09,170 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse1 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (< (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse1 4294967294)) 4294967296) .cse1) (= (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296) (* 2 .cse1)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~b~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (< (* .cse1 4) (+ .cse2 1)) (< .cse2 (* 2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648))))) is different from true [2024-11-28 02:40:25,230 WARN L286 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:40:41,273 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:41:01,331 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:41:25,513 WARN L286 SmtUtils]: Spent 20.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:41:29,533 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912))) (or (= (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296) (* 4 .cse0)) (< (* 8 .cse0) (+ .cse1 1)) (not (= .cse2 (mod (+ (* 8 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (< .cse1 (* (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824) 4)) (= .cse2 (mod (+ (* 8 .cse0 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296)) (< (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 4294967292 .cse0)) 4294967296) (* 2 .cse0)))) is different from true [2024-11-28 02:41:49,599 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:41:57,613 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:42:13,656 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:42:29,692 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:42:49,775 WARN L286 SmtUtils]: Spent 20.08s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:42:53,793 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 268435456)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (or (< (mod (+ (* 4294967288 .cse0) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) (* .cse0 4)) (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse0 16 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse1) (< .cse2 (* 8 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912))) (= (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296) (* .cse0 8)) (< (* .cse0 16) (+ .cse2 1)) (not (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 16 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from true [2024-11-28 02:43:09,843 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:43:29,909 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:43:45,707 WARN L286 SmtUtils]: Spent 15.80s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:44:05,770 WARN L286 SmtUtils]: Spent 20.06s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:44:25,834 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:44:29,846 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 134217728))) (or (= (mod (+ (* .cse0 32 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1) (< (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse0 4294967280)) 4294967296) (* .cse0 8)) (< .cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (< (* .cse0 32) (+ .cse2 1)) (< .cse2 (* (mod |c_ULTIMATE.start_main_~b~0#1| 268435456) 16)) (not (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 32 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse1)) (= (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296) (* .cse0 16)))) is different from true [2024-11-28 02:44:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 14 not checked. [2024-11-28 02:44:29,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:29,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886070368] [2024-11-28 02:44:29,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:44:29,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907706835] [2024-11-28 02:44:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907706835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:44:29,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:44:29,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 30 [2024-11-28 02:44:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270539588] [2024-11-28 02:44:29,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:44:29,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:44:29,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:29,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:44:29,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=505, Unknown=6, NotChecked=204, Total=870 [2024-11-28 02:44:29,852 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 30 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 28 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:45:14,513 WARN L286 SmtUtils]: Spent 41.62s on a formula simplification. DAG size of input: 74 DAG size of output: 51 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:45:19,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:45:23,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:45:27,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:45:41,459 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:45:45,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []