./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya --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 1092dc43771f76171dbbfe5cf9949987a7ce05735adacf2ba24acd31005dd17a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:51:59,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:51:59,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:51:59,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:51:59,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:51:59,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:51:59,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:51:59,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:51:59,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:51:59,497 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:51:59,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:51:59,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:51:59,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:51:59,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:51:59,500 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:51:59,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:51:59,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:51:59,502 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:51:59,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:51:59,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:51:59,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:51:59,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:51:59,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:51:59,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:51:59,506 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:51:59,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:51:59,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:51:59,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:51:59,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:51:59,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:51:59,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:51:59,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:51:59,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:51:59,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:51:59,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:51:59,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:51:59,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:51:59,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:51:59,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:51:59,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:51:59,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:51:59,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:51:59,511 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1092dc43771f76171dbbfe5cf9949987a7ce05735adacf2ba24acd31005dd17a [2023-11-29 03:51:59,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:51:59,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:51:59,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:51:59,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:51:59,798 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:51:59,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i [2023-11-29 03:52:02,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:52:02,735 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:52:02,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i [2023-11-29 03:52:02,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data/1a3d89316/38a8f0b351e84506ae5353d860262cdc/FLAG4b2a1e947 [2023-11-29 03:52:02,767 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data/1a3d89316/38a8f0b351e84506ae5353d860262cdc [2023-11-29 03:52:02,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:52:02,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:52:02,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:52:02,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:52:02,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:52:02,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:52:02" (1/1) ... [2023-11-29 03:52:02,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcf93a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:02, skipping insertion in model container [2023-11-29 03:52:02,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:52:02" (1/1) ... [2023-11-29 03:52:02,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:52:02,932 WARN L240 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_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i[915,928] [2023-11-29 03:52:02,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:52:02,983 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:52:02,997 WARN L240 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_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i[915,928] [2023-11-29 03:52:03,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:52:03,029 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:52:03,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03 WrapperNode [2023-11-29 03:52:03,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:52:03,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:52:03,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:52:03,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:52:03,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,066 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2023-11-29 03:52:03,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:52:03,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:52:03,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:52:03,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:52:03,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,090 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]. [2023-11-29 03:52:03,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:52:03,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:52:03,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:52:03,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:52:03,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (1/1) ... [2023-11-29 03:52:03,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:52:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:52:03,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:52:03,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:52:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:52:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:52:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:52:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:52:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:52:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:52:03,274 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:52:03,276 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:52:03,508 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:52:03,550 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:52:03,550 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:52:03,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:52:03 BoogieIcfgContainer [2023-11-29 03:52:03,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:52:03,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:52:03,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:52:03,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:52:03,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:52:02" (1/3) ... [2023-11-29 03:52:03,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74073f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:52:03, skipping insertion in model container [2023-11-29 03:52:03,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:52:03" (2/3) ... [2023-11-29 03:52:03,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74073f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:52:03, skipping insertion in model container [2023-11-29 03:52:03,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:52:03" (3/3) ... [2023-11-29 03:52:03,560 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-25.i [2023-11-29 03:52:03,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:52:03,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:52:03,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:52:03,640 INFO L357 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, mHoare=true, 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;@57b2ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:52:03,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:52:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 03:52:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:52:03,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:52:03,662 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:52:03,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:52:03,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:52:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1188313540, now seen corresponding path program 1 times [2023-11-29 03:52:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:52:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570918757] [2023-11-29 03:52:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:52:03,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:52:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:52:03,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:52:03,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570918757] [2023-11-29 03:52:03,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:52:03,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107010630] [2023-11-29 03:52:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:52:03,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:52:03,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:52:03,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:52:03,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:52:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:52:04,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:52:04,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:52:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-29 03:52:04,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:52:04,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107010630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:52:04,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:52:04,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:52:04,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591343983] [2023-11-29 03:52:04,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:52:04,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:52:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:52:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:52:04,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:52:04,108 INFO L87 Difference]: Start difference. First operand has 52 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:52:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:52:04,143 INFO L93 Difference]: Finished difference Result 101 states and 183 transitions. [2023-11-29 03:52:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:52:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2023-11-29 03:52:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:52:04,154 INFO L225 Difference]: With dead ends: 101 [2023-11-29 03:52:04,154 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 03:52:04,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:52:04,161 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:52:04,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:52:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 03:52:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 03:52:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 03:52:04,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2023-11-29 03:52:04,207 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 135 [2023-11-29 03:52:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:52:04,208 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2023-11-29 03:52:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:52:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2023-11-29 03:52:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:52:04,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:52:04,213 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:52:04,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:52:04,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:52:04,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:52:04,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:52:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 807068218, now seen corresponding path program 1 times [2023-11-29 03:52:04,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:52:04,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516320974] [2023-11-29 03:52:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:52:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:52:04,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:52:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619976621] [2023-11-29 03:52:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:52:04,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:52:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:52:04,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:52:04,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:52:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:52:04,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:52:04,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:52:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-29 03:52:32,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:53:34,771 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_1~0 4294967296)) (.cse5 (+ c_~var_1_13~0 1)) (.cse6 (+ (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296) 1))) (let ((.cse1 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse5) (< (mod (div 127 ~var_1_9~0) 4294967296) .cse6)))) (.cse0 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse2 (= (mod c_~var_1_5~0 4294967296) .cse3))) (and (or .cse0 .cse1) (or .cse1 .cse2) (forall ((~var_1_9~0 Int)) (let ((.cse4 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse3 .cse4) (< ~var_1_9~0 .cse5) (< .cse4 .cse6)))) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse0 .cse2 (<= (+ .cse3 1) .cse7)) (< .cse7 .cse6)))))) is different from false [2023-11-29 03:53:39,368 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_1~0 4294967296))) (let ((.cse2 (+ .cse4 1))) (let ((.cse0 (= (mod c_~var_1_5~0 4294967296) .cse4)) (.cse3 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse1 (forall ((~var_1_9~0 Int)) (or (< (mod (div 127 ~var_1_9~0) 4294967296) .cse2) (< ~var_1_9~0 (+ c_~var_1_13~0 1)))))) (and (or .cse0 .cse1) (or (< (mod (div 127 c_~var_1_13~0) 4294967296) .cse2) (and .cse3 .cse0)) (or .cse3 .cse1))))) is different from false [2023-11-29 03:53:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-29 03:53:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516320974] [2023-11-29 03:53:39,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:53:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619976621] [2023-11-29 03:53:39,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619976621] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:53:39,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:53:39,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-11-29 03:53:39,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246342239] [2023-11-29 03:53:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:53:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:53:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:53:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2023-11-29 03:53:39,481 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 03:53:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:53:41,794 INFO L93 Difference]: Finished difference Result 75 states and 106 transitions. [2023-11-29 03:53:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:53:41,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-29 03:53:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:53:41,798 INFO L225 Difference]: With dead ends: 75 [2023-11-29 03:53:41,798 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 03:53:41,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=62, Invalid=216, Unknown=2, NotChecked=62, Total=342 [2023-11-29 03:53:41,799 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 22 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:53:41,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 367 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 102 Unchecked, 1.3s Time] [2023-11-29 03:53:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 03:53:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2023-11-29 03:53:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 03:53:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2023-11-29 03:53:41,815 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 135 [2023-11-29 03:53:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:53:41,816 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2023-11-29 03:53:41,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 03:53:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2023-11-29 03:53:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:53:41,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:41,818 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:53:41,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:53:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:53:42,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:42,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash 807127800, now seen corresponding path program 1 times [2023-11-29 03:53:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:42,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963316160] [2023-11-29 03:53:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:42,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:53:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281723303] [2023-11-29 03:53:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:42,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:53:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:53:42,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:53:42,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:53:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:42,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:53:42,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-29 03:55:22,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:30,305 WARN L293 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 119 DAG size of output: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:56:42,005 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_1~0 4294967296)) (.cse5 (+ c_~var_1_13~0 1)) (.cse6 (+ (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296) 1))) (let ((.cse1 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse5) (< (mod (div 127 ~var_1_9~0) 4294967296) .cse6)))) (.cse0 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse2 (= (mod c_~var_1_5~0 4294967296) .cse3))) (and (or .cse0 .cse1) (or .cse1 .cse2) (forall ((~var_1_9~0 Int)) (let ((.cse4 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse3 .cse4) (< ~var_1_9~0 .cse5) (< .cse4 .cse6)))) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse0 .cse2 (<= (+ .cse3 1) .cse7)) (< .cse7 .cse6)))))) is different from false [2023-11-29 03:56:46,465 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_1~0 4294967296))) (let ((.cse2 (+ .cse4 1))) (let ((.cse0 (= (mod c_~var_1_5~0 4294967296) .cse4)) (.cse3 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse1 (forall ((~var_1_9~0 Int)) (or (< (mod (div 127 ~var_1_9~0) 4294967296) .cse2) (< ~var_1_9~0 (+ c_~var_1_13~0 1)))))) (and (or .cse0 .cse1) (or (< (mod (div 127 c_~var_1_13~0) 4294967296) .cse2) (and .cse3 .cse0)) (or .cse3 .cse1))))) is different from false [2023-11-29 03:56:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-29 03:56:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963316160] [2023-11-29 03:56:46,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:56:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281723303] [2023-11-29 03:56:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281723303] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:46,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:56:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 03:56:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361939359] [2023-11-29 03:56:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:56:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:56:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2023-11-29 03:56:46,557 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 03:56:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:53,305 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2023-11-29 03:56:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:56:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-29 03:56:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:53,308 INFO L225 Difference]: With dead ends: 72 [2023-11-29 03:56:53,309 INFO L226 Difference]: Without dead ends: 70 [2023-11-29 03:56:53,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=45, Invalid=143, Unknown=2, NotChecked=50, Total=240 [2023-11-29 03:56:53,310 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 4 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:53,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 339 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 64 Unchecked, 1.6s Time] [2023-11-29 03:56:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-29 03:56:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-11-29 03:56:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 03:56:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2023-11-29 03:56:53,323 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 135 [2023-11-29 03:56:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:53,323 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2023-11-29 03:56:53,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 03:56:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2023-11-29 03:56:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:56:53,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:53,326 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:53,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:56:53,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:53,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:56:53,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash 808915260, now seen corresponding path program 1 times [2023-11-29 03:56:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171896651] [2023-11-29 03:56:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:53,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:56:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501606010] [2023-11-29 03:56:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:53,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:53,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:53,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:53,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:56:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:53,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:56:53,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-29 03:57:08,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:11,783 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_1~0 4294967296)) (.cse2 (+ c_~var_1_13~0 1)) (.cse3 (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296))) (let ((.cse4 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse2) (< .cse3 (mod (div 127 ~var_1_9~0) 4294967296))))) (.cse6 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse5 (= (mod c_~var_1_5~0 4294967296) .cse1))) (and (forall ((~var_1_9~0 Int)) (let ((.cse0 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse0 (+ .cse1 1)) (< ~var_1_9~0 .cse2) (< .cse3 .cse0)))) (or .cse4 .cse5) (or .cse4 .cse6) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse6 .cse5 (<= .cse7 .cse1)) (< .cse3 .cse7)))))) is different from false [2023-11-29 03:58:11,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 03:58:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171896651] [2023-11-29 03:58:11,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:11,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501606010] [2023-11-29 03:58:11,824 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 03:58:11,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:58:12,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:12,025 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:867) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 46 more [2023-11-29 03:58:12,027 INFO L158 Benchmark]: Toolchain (without parser) took 369256.54ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 142.7MB in the beginning and 640.1MB in the end (delta: -497.4MB). Peak memory consumption was 505.7MB. Max. memory is 16.1GB. [2023-11-29 03:58:12,028 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory was 102.1MB in the beginning and 102.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:58:12,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.75ms. Allocated memory is still 172.0MB. Free memory was 142.5MB in the beginning and 135.8MB in the end (delta: 6.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2023-11-29 03:58:12,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.60ms. Allocated memory is still 172.0MB. Free memory was 135.8MB in the beginning and 133.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:58:12,029 INFO L158 Benchmark]: Boogie Preprocessor took 36.89ms. Allocated memory is still 172.0MB. Free memory was 133.7MB in the beginning and 130.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:58:12,029 INFO L158 Benchmark]: RCFGBuilder took 446.09ms. Allocated memory is still 172.0MB. Free memory was 130.7MB in the beginning and 127.9MB in the end (delta: 2.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 03:58:12,029 INFO L158 Benchmark]: TraceAbstraction took 368473.12ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 126.9MB in the beginning and 640.1MB in the end (delta: -513.1MB). Peak memory consumption was 493.4MB. Max. memory is 16.1GB. [2023-11-29 03:58:12,032 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory was 102.1MB in the beginning and 102.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.75ms. Allocated memory is still 172.0MB. Free memory was 142.5MB in the beginning and 135.8MB in the end (delta: 6.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.60ms. Allocated memory is still 172.0MB. Free memory was 135.8MB in the beginning and 133.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.89ms. Allocated memory is still 172.0MB. Free memory was 133.7MB in the beginning and 130.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.09ms. Allocated memory is still 172.0MB. Free memory was 130.7MB in the beginning and 127.9MB in the end (delta: 2.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 368473.12ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 126.9MB in the beginning and 640.1MB in the end (delta: -513.1MB). Peak memory consumption was 493.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya --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 1092dc43771f76171dbbfe5cf9949987a7ce05735adacf2ba24acd31005dd17a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:58:13,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:58:13,828 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 03:58:13,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:58:13,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:58:13,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:58:13,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:58:13,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:58:13,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:58:13,863 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:58:13,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:58:13,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:58:13,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:58:13,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:58:13,865 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:58:13,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:58:13,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:58:13,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:58:13,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:58:13,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:58:13,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:58:13,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:58:13,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:58:13,870 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:58:13,871 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 03:58:13,871 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 03:58:13,871 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:58:13,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:58:13,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:58:13,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:58:13,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:58:13,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:58:13,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:58:13,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:58:13,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:58:13,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:58:13,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:58:13,875 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 03:58:13,875 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 03:58:13,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:58:13,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:58:13,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:58:13,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:58:13,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:58:13,876 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 03:58:13,877 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1092dc43771f76171dbbfe5cf9949987a7ce05735adacf2ba24acd31005dd17a [2023-11-29 03:58:14,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:58:14,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:58:14,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:58:14,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:58:14,207 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:58:14,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i [2023-11-29 03:58:17,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:58:17,214 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:58:17,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i [2023-11-29 03:58:17,224 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data/43d39d918/6b0ea79abcd04eda9abc3f2769ef3f27/FLAGa4d40ef30 [2023-11-29 03:58:17,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/data/43d39d918/6b0ea79abcd04eda9abc3f2769ef3f27 [2023-11-29 03:58:17,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:58:17,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:58:17,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:58:17,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:58:17,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:58:17,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7295f3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17, skipping insertion in model container [2023-11-29 03:58:17,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:58:17,448 WARN L240 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_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i[915,928] [2023-11-29 03:58:17,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:17,500 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:58:17,513 WARN L240 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_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-25.i[915,928] [2023-11-29 03:58:17,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:17,554 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:58:17,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17 WrapperNode [2023-11-29 03:58:17,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:58:17,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:58:17,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:58:17,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:58:17,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,600 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2023-11-29 03:58:17,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:58:17,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:58:17,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:58:17,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:58:17,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,630 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]. [2023-11-29 03:58:17,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:58:17,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:58:17,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:58:17,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:58:17,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (1/1) ... [2023-11-29 03:58:17,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:58:17,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:17,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:58:17,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:58:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:58:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 03:58:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:58:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:58:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:58:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:58:17,794 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:58:17,796 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:58:18,119 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:58:18,177 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:58:18,177 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:58:18,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:58:18 BoogieIcfgContainer [2023-11-29 03:58:18,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:58:18,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:58:18,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:58:18,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:58:18,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:58:17" (1/3) ... [2023-11-29 03:58:18,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4379f1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:58:18, skipping insertion in model container [2023-11-29 03:58:18,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:17" (2/3) ... [2023-11-29 03:58:18,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4379f1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:58:18, skipping insertion in model container [2023-11-29 03:58:18,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:58:18" (3/3) ... [2023-11-29 03:58:18,188 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-25.i [2023-11-29 03:58:18,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:58:18,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:58:18,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:58:18,269 INFO L357 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, mHoare=true, 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;@42028999, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:58:18,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:58:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 03:58:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:58:18,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:18,291 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:18,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:58:18,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1188313540, now seen corresponding path program 1 times [2023-11-29 03:58:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247917827] [2023-11-29 03:58:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:18,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:18,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:58:18,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 03:58:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:18,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:58:18,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2023-11-29 03:58:18,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:18,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247917827] [2023-11-29 03:58:18,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247917827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:18,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:58:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680919268] [2023-11-29 03:58:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:18,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:58:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:58:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:58:18,654 INFO L87 Difference]: Start difference. First operand has 52 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:58:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:18,707 INFO L93 Difference]: Finished difference Result 101 states and 183 transitions. [2023-11-29 03:58:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:58:18,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2023-11-29 03:58:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:18,719 INFO L225 Difference]: With dead ends: 101 [2023-11-29 03:58:18,719 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 03:58:18,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:58:18,726 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:18,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:58:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 03:58:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 03:58:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 03:58:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2023-11-29 03:58:18,768 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 135 [2023-11-29 03:58:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:18,768 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2023-11-29 03:58:18,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:58:18,769 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2023-11-29 03:58:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:58:18,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:18,773 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:18,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:18,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:18,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:58:18,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 807068218, now seen corresponding path program 1 times [2023-11-29 03:58:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:18,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761271460] [2023-11-29 03:58:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:18,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:18,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:18,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:58:18,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 03:58:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:19,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:58:19,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 486 proven. 42 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-11-29 03:58:19,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:20,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761271460] [2023-11-29 03:58:20,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761271460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [943029991] [2023-11-29 03:58:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:20,532 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:58:20,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:58:20,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:58:20,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-29 03:58:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:20,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:58:20,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 486 proven. 42 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-11-29 03:58:21,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [943029991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:22,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:22,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 03:58:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215945659] [2023-11-29 03:58:22,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:22,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:22,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:22,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:22,890 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:58:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:23,337 INFO L93 Difference]: Finished difference Result 105 states and 156 transitions. [2023-11-29 03:58:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:58:23,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2023-11-29 03:58:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:23,344 INFO L225 Difference]: With dead ends: 105 [2023-11-29 03:58:23,344 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 03:58:23,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:23,346 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 29 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:23,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 86 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:58:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 03:58:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-29 03:58:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 03:58:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 78 transitions. [2023-11-29 03:58:23,357 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 78 transitions. Word has length 135 [2023-11-29 03:58:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:23,358 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 78 transitions. [2023-11-29 03:58:23,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:58:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 78 transitions. [2023-11-29 03:58:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 03:58:23,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:23,360 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:23,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 03:58:23,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-29 03:58:23,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 03:58:23,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:58:23,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash 808915260, now seen corresponding path program 1 times [2023-11-29 03:58:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:23,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581692294] [2023-11-29 03:58:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:23,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:23,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:23,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:58:23,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 03:58:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:23,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:58:23,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 507 proven. 90 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-11-29 03:58:34,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:09,882 WARN L293 SmtUtils]: Spent 26.41s on a formula simplification. DAG size of input: 379 DAG size of output: 375 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:00:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-29 04:00:34,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581692294] [2023-11-29 04:00:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581692294] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:34,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:34,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 20 [2023-11-29 04:00:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860728646] [2023-11-29 04:00:34,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:34,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:00:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:00:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:00:34,462 INFO L87 Difference]: Start difference. First operand 54 states and 78 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 04:00:55,656 WARN L293 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 185 DAG size of output: 200 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:01:22,847 WARN L293 SmtUtils]: Spent 23.41s on a formula simplification. DAG size of input: 407 DAG size of output: 431 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:01:31,493 WARN L293 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 183 DAG size of output: 198 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:01:33,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:01:57,370 WARN L293 SmtUtils]: Spent 23.16s on a formula simplification that was a NOOP. DAG size: 378 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:02:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:09,428 INFO L93 Difference]: Finished difference Result 183 states and 259 transitions. [2023-11-29 04:02:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:02:09,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-29 04:02:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:09,432 INFO L225 Difference]: With dead ends: 183 [2023-11-29 04:02:09,432 INFO L226 Difference]: Without dead ends: 130 [2023-11-29 04:02:09,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 118.0s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:02:09,435 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 63 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:09,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 338 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-11-29 04:02:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-29 04:02:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2023-11-29 04:02:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 1.098360655737705) internal successors, (67), 62 states have internal predecessors, (67), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-29 04:02:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2023-11-29 04:02:09,481 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 135 [2023-11-29 04:02:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:09,482 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 167 transitions. [2023-11-29 04:02:09,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 04:02:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 167 transitions. [2023-11-29 04:02:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 04:02:09,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:09,485 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:09,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:02:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:02:09,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:02:09,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash 808974842, now seen corresponding path program 1 times [2023-11-29 04:02:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:02:09,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189073490] [2023-11-29 04:02:09,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:09,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:02:09,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:02:09,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:02:09,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 04:02:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:09,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:02:09,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 678 proven. 111 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-29 04:02:25,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:04:50,939 WARN L293 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 336 DAG size of output: 332 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:16,331 WARN L293 SmtUtils]: Spent 11.72s on a formula simplification. DAG size of input: 192 DAG size of output: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:34,034 WARN L293 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:52,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:05:52,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189073490] [2023-11-29 04:05:52,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189073490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:05:52,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1172528832] [2023-11-29 04:05:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:52,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:05:52,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:05:52,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:05:52,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6cd8e7-2535-48f7-aedd-572b1b084c0e/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-29 04:05:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:52,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:05:52,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 516 proven. 27 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-29 04:06:30,206 INFO L327 TraceCheckSpWp]: Computing backward predicates...