./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/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_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/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_ffef5267-00f8-4307-a529-6ff2a7cc9176/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 e9f5cbcd9b5e7070eed068152e26dc672bc2b60288a251274726ceb1bf0c8d9b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:33:37,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:33:37,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:33:37,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:33:37,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:33:37,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:33:37,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:33:37,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:33:37,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:33:37,663 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:33:37,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:33:37,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:33:37,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:33:37,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:33:37,666 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:33:37,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:33:37,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:33:37,667 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:33:37,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:33:37,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:33:37,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:33:37,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:33:37,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:33:37,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:33:37,671 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:33:37,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:33:37,672 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:33:37,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:33:37,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:33:37,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:33:37,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:33:37,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:33:37,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:33:37,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:33:37,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:33:37,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:33:37,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:33:37,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:33:37,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:33:37,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:33:37,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:33:37,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:33:37,676 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_ffef5267-00f8-4307-a529-6ff2a7cc9176/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cbcd9b5e7070eed068152e26dc672bc2b60288a251274726ceb1bf0c8d9b [2023-11-28 23:33:37,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:33:37,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:33:37,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:33:37,922 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:33:37,922 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:33:37,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i [2023-11-28 23:33:40,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:33:40,957 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:33:40,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i [2023-11-28 23:33:40,967 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/data/fcc565629/57b3c5f0ea82487db3b05f8f5534fcee/FLAG9206297a9 [2023-11-28 23:33:40,981 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/data/fcc565629/57b3c5f0ea82487db3b05f8f5534fcee [2023-11-28 23:33:40,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:33:40,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:33:40,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:33:40,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:33:40,992 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:33:40,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:33:40" (1/1) ... [2023-11-28 23:33:40,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0dab12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:40, skipping insertion in model container [2023-11-28 23:33:40,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:33:40" (1/1) ... [2023-11-28 23:33:41,024 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:33:41,163 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_ffef5267-00f8-4307-a529-6ff2a7cc9176/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i[919,932] [2023-11-28 23:33:41,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:33:41,227 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:33:41,238 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_ffef5267-00f8-4307-a529-6ff2a7cc9176/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i[919,932] [2023-11-28 23:33:41,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:33:41,284 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:33:41,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41 WrapperNode [2023-11-28 23:33:41,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:33:41,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:33:41,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:33:41,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:33:41,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,341 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 180 [2023-11-28 23:33:41,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:33:41,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:33:41,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:33:41,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:33:41,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,373 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]. [2023-11-28 23:33:41,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:33:41,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:33:41,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:33:41,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:33:41,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (1/1) ... [2023-11-28 23:33:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:33:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:41,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:33:41,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:33:41,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:33:41,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 23:33:41,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 23:33:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:33:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:33:41,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:33:41,559 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:33:41,561 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:33:41,899 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:33:41,942 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:33:41,943 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:33:41,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:33:41 BoogieIcfgContainer [2023-11-28 23:33:41,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:33:41,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:33:41,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:33:41,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:33:41,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:33:40" (1/3) ... [2023-11-28 23:33:41,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2a42bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:33:41, skipping insertion in model container [2023-11-28 23:33:41,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:41" (2/3) ... [2023-11-28 23:33:41,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2a42bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:33:41, skipping insertion in model container [2023-11-28 23:33:41,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:33:41" (3/3) ... [2023-11-28 23:33:41,952 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i [2023-11-28 23:33:41,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:33:41,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:33:42,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:33:42,017 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;@92d3ba9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:33:42,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:33:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 50 states have (on average 1.56) internal successors, (78), 51 states have internal predecessors, (78), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-28 23:33:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 23:33:42,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:42,038 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:42,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:33:42,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1319692166, now seen corresponding path program 1 times [2023-11-28 23:33:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616371672] [2023-11-28 23:33:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:42,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:42,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:42,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616371672] [2023-11-28 23:33:42,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 23:33:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022756788] [2023-11-28 23:33:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:42,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:42,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:42,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:33:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:42,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:33:42,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-11-28 23:33:42,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:33:42,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022756788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:33:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049575018] [2023-11-28 23:33:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:33:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:42,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:33:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:33:42,519 INFO L87 Difference]: Start difference. First operand has 75 states, 50 states have (on average 1.56) internal successors, (78), 51 states have internal predecessors, (78), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-28 23:33:42,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:42,558 INFO L93 Difference]: Finished difference Result 147 states and 264 transitions. [2023-11-28 23:33:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:33:42,561 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 145 [2023-11-28 23:33:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:42,568 INFO L225 Difference]: With dead ends: 147 [2023-11-28 23:33:42,568 INFO L226 Difference]: Without dead ends: 73 [2023-11-28 23:33:42,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:33:42,575 INFO L413 NwaCegarLoop]: 114 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, 114 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 [2023-11-28 23:33:42,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:33:42,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-28 23:33:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-28 23:33:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-28 23:33:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 117 transitions. [2023-11-28 23:33:42,619 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 117 transitions. Word has length 145 [2023-11-28 23:33:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:42,620 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 117 transitions. [2023-11-28 23:33:42,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-28 23:33:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 117 transitions. [2023-11-28 23:33:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 23:33:42,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:42,625 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:33:42,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 23:33:42,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:33:42,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1833116930, now seen corresponding path program 1 times [2023-11-28 23:33:42,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:42,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872415759] [2023-11-28 23:33:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:42,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070762174] [2023-11-28 23:33:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:42,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:42,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:33:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:43,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:33:43,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-11-28 23:33:43,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:33:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:43,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872415759] [2023-11-28 23:33:43,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:43,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070762174] [2023-11-28 23:33:43,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070762174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:43,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:43,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:33:43,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523880779] [2023-11-28 23:33:43,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:33:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:33:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:33:43,250 INFO L87 Difference]: Start difference. First operand 73 states and 117 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-28 23:33:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:43,405 INFO L93 Difference]: Finished difference Result 181 states and 287 transitions. [2023-11-28 23:33:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:33:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 145 [2023-11-28 23:33:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:43,409 INFO L225 Difference]: With dead ends: 181 [2023-11-28 23:33:43,409 INFO L226 Difference]: Without dead ends: 109 [2023-11-28 23:33:43,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:33:43,412 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 113 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:43,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 200 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:33:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-28 23:33:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2023-11-28 23:33:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:33:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 167 transitions. [2023-11-28 23:33:43,435 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 167 transitions. Word has length 145 [2023-11-28 23:33:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:43,436 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 167 transitions. [2023-11-28 23:33:43,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-28 23:33:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 167 transitions. [2023-11-28 23:33:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 23:33:43,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:43,440 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:43,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:33:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 23:33:43,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:33:43,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1652503740, now seen corresponding path program 1 times [2023-11-28 23:33:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:43,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204664596] [2023-11-28 23:33:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:43,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224239440] [2023-11-28 23:33:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:43,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:43,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:43,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:33:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:43,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:33:43,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 481 proven. 33 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-11-28 23:33:43,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-28 23:33:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204664596] [2023-11-28 23:33:44,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224239440] [2023-11-28 23:33:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224239440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:44,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-28 23:33:44,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183644481] [2023-11-28 23:33:44,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:33:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:33:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:33:44,198 INFO L87 Difference]: Start difference. First operand 106 states and 167 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-28 23:33:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:44,448 INFO L93 Difference]: Finished difference Result 186 states and 290 transitions. [2023-11-28 23:33:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:33:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 145 [2023-11-28 23:33:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:44,451 INFO L225 Difference]: With dead ends: 186 [2023-11-28 23:33:44,452 INFO L226 Difference]: Without dead ends: 79 [2023-11-28 23:33:44,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:33:44,455 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 61 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:44,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 186 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:33:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-28 23:33:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2023-11-28 23:33:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-28 23:33:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2023-11-28 23:33:44,472 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 117 transitions. Word has length 145 [2023-11-28 23:33:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:44,473 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 117 transitions. [2023-11-28 23:33:44,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-28 23:33:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 117 transitions. [2023-11-28 23:33:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-28 23:33:44,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:44,477 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:44,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-28 23:33:44,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:44,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:33:44,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:44,684 INFO L85 PathProgramCache]: Analyzing trace with hash 369858230, now seen corresponding path program 1 times [2023-11-28 23:33:44,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:44,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702195002] [2023-11-28 23:33:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:44,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:44,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17426082] [2023-11-28 23:33:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:44,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:44,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:44,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:44,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:33:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:44,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:33:44,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 463 proven. 24 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-28 23:33:45,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 39 proven. 24 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-28 23:33:45,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:45,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702195002] [2023-11-28 23:33:45,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:45,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17426082] [2023-11-28 23:33:45,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17426082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:45,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:45,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-28 23:33:45,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588271566] [2023-11-28 23:33:45,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:45,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:33:45,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:33:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:33:45,178 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-28 23:33:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:45,378 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2023-11-28 23:33:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:33:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 146 [2023-11-28 23:33:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:45,380 INFO L225 Difference]: With dead ends: 159 [2023-11-28 23:33:45,381 INFO L226 Difference]: Without dead ends: 83 [2023-11-28 23:33:45,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:33:45,382 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 157 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:45,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 207 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:33:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-28 23:33:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2023-11-28 23:33:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-28 23:33:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 119 transitions. [2023-11-28 23:33:45,398 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 119 transitions. Word has length 146 [2023-11-28 23:33:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:45,399 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 119 transitions. [2023-11-28 23:33:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-28 23:33:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2023-11-28 23:33:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-28 23:33:45,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:45,402 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:45,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:33:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:45,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:33:45,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash -23168780, now seen corresponding path program 1 times [2023-11-28 23:33:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456184128] [2023-11-28 23:33:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:45,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:45,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665347264] [2023-11-28 23:33:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:45,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:45,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffef5267-00f8-4307-a529-6ff2a7cc9176/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:33:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:45,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-28 23:33:45,775 INFO L285 TraceCheckSpWp]: Computing forward predicates...