./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.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_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme --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 c1b0a215876f37039c6c55ed6970931c1670c48c809fddaaf54aa4f3ef26ee12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:20,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:20,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:57:20,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:20,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:20,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:20,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:20,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:20,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:20,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:20,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:20,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:20,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:20,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:20,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:20,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:20,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:20,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:20,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:20,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:20,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:20,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:20,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:20,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:20,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:20,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:20,575 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:20,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:20,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:20,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:20,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:20,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:20,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:20,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:20,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:20,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:20,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:20,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:20,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:20,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:20,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:20,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:20,603 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_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1b0a215876f37039c6c55ed6970931c1670c48c809fddaaf54aa4f3ef26ee12 [2023-11-26 11:57:20,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:20,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:20,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:20,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:20,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:20,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i [2023-11-26 11:57:24,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:24,434 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:24,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i [2023-11-26 11:57:24,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/data/a5c4ab716/da7476543341441e9f74d0b1ab1e1d2b/FLAGf41e061e6 [2023-11-26 11:57:24,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/data/a5c4ab716/da7476543341441e9f74d0b1ab1e1d2b [2023-11-26 11:57:24,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:24,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:24,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:24,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:24,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:24,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:24" (1/1) ... [2023-11-26 11:57:24,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f9c334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:24, skipping insertion in model container [2023-11-26 11:57:24,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:24" (1/1) ... [2023-11-26 11:57:24,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:24,760 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_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i[916,929] [2023-11-26 11:57:24,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:25,011 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:25,029 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_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i[916,929] [2023-11-26 11:57:25,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:25,155 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:25,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25 WrapperNode [2023-11-26 11:57:25,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:25,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:25,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:25,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:25,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,295 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 325 [2023-11-26 11:57:25,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:25,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:25,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:25,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:25,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,469 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]. [2023-11-26 11:57:25,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:25,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:25,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:25,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:25,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (1/1) ... [2023-11-26 11:57:25,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:25,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:25,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:25,634 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:25,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:25,777 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:25,780 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:26,655 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:26,738 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:26,738 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:57:26,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:26 BoogieIcfgContainer [2023-11-26 11:57:26,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:26,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:26,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:26,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:26,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:24" (1/3) ... [2023-11-26 11:57:26,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f2fa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:26, skipping insertion in model container [2023-11-26 11:57:26,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:25" (2/3) ... [2023-11-26 11:57:26,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f2fa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:26, skipping insertion in model container [2023-11-26 11:57:26,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:26" (3/3) ... [2023-11-26 11:57:26,755 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-38.i [2023-11-26 11:57:26,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:26,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:57:26,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:26,862 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;@49bb08b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:26,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:57:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 91 states have internal predecessors, (141), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:57:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-26 11:57:26,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:26,909 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:26,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:26,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -112723981, now seen corresponding path program 1 times [2023-11-26 11:57:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810789185] [2023-11-26 11:57:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:27,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:27,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557276794] [2023-11-26 11:57:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:27,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:27,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:27,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:27,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:27,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:57:27,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:57:27,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:27,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810789185] [2023-11-26 11:57:27,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557276794] [2023-11-26 11:57:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557276794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:27,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:27,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:27,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672513430] [2023-11-26 11:57:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:27,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:27,868 INFO L87 Difference]: Start difference. First operand has 131 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 91 states have internal predecessors, (141), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:57:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:28,085 INFO L93 Difference]: Finished difference Result 382 states and 713 transitions. [2023-11-26 11:57:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 251 [2023-11-26 11:57:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:28,102 INFO L225 Difference]: With dead ends: 382 [2023-11-26 11:57:28,102 INFO L226 Difference]: Without dead ends: 252 [2023-11-26 11:57:28,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:28,112 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 184 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:28,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 504 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:57:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-26 11:57:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 162. [2023-11-26 11:57:28,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:57:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 262 transitions. [2023-11-26 11:57:28,182 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 262 transitions. Word has length 251 [2023-11-26 11:57:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:28,185 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 262 transitions. [2023-11-26 11:57:28,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:57:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 262 transitions. [2023-11-26 11:57:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-26 11:57:28,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:28,192 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:28,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:28,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:57:28,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:28,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1355568102, now seen corresponding path program 1 times [2023-11-26 11:57:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823345670] [2023-11-26 11:57:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:28,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028079971] [2023-11-26 11:57:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:28,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:28,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:28,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:28,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:57:28,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 937 proven. 21 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2023-11-26 11:57:28,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 90 proven. 21 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-26 11:57:29,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823345670] [2023-11-26 11:57:29,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028079971] [2023-11-26 11:57:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028079971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:29,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:29,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:57:29,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857116767] [2023-11-26 11:57:29,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:29,252 INFO L87 Difference]: Start difference. First operand 162 states and 262 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-26 11:57:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:29,963 INFO L93 Difference]: Finished difference Result 375 states and 604 transitions. [2023-11-26 11:57:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 252 [2023-11-26 11:57:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:29,968 INFO L225 Difference]: With dead ends: 375 [2023-11-26 11:57:29,968 INFO L226 Difference]: Without dead ends: 214 [2023-11-26 11:57:29,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:29,971 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 154 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:29,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 581 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:57:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-26 11:57:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2023-11-26 11:57:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 142 states have (on average 1.443661971830986) internal successors, (205), 143 states have internal predecessors, (205), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-26 11:57:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 341 transitions. [2023-11-26 11:57:30,009 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 341 transitions. Word has length 252 [2023-11-26 11:57:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:30,010 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 341 transitions. [2023-11-26 11:57:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-26 11:57:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 341 transitions. [2023-11-26 11:57:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-26 11:57:30,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:30,016 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:30,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:30,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:30,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 961201316, now seen corresponding path program 1 times [2023-11-26 11:57:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290392802] [2023-11-26 11:57:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:30,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:30,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086765459] [2023-11-26 11:57:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:30,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:30,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:30,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:57:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:30,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:57:30,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:57:32,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:32,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290392802] [2023-11-26 11:57:32,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:32,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086765459] [2023-11-26 11:57:32,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086765459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:32,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082272231] [2023-11-26 11:57:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:32,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:32,352 INFO L87 Difference]: Start difference. First operand 213 states and 341 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:57:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:32,752 INFO L93 Difference]: Finished difference Result 497 states and 791 transitions. [2023-11-26 11:57:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 252 [2023-11-26 11:57:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:32,757 INFO L225 Difference]: With dead ends: 497 [2023-11-26 11:57:32,758 INFO L226 Difference]: Without dead ends: 332 [2023-11-26 11:57:32,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:32,760 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 228 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 697 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-26 11:57:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 235. [2023-11-26 11:57:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 154 states have (on average 1.4090909090909092) internal successors, (217), 154 states have internal predecessors, (217), 76 states have call successors, (76), 4 states have call predecessors, (76), 4 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:57:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 369 transitions. [2023-11-26 11:57:32,817 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 369 transitions. Word has length 252 [2023-11-26 11:57:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:32,822 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 369 transitions. [2023-11-26 11:57:32,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:57:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 369 transitions. [2023-11-26 11:57:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-11-26 11:57:32,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:32,828 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:32,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:33,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:33,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:33,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:33,036 INFO L85 PathProgramCache]: Analyzing trace with hash 738404631, now seen corresponding path program 1 times [2023-11-26 11:57:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767188561] [2023-11-26 11:57:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:33,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560558801] [2023-11-26 11:57:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:33,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:33,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:33,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:33,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:57:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:33,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:57:33,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-11-26 11:57:35,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:36,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767188561] [2023-11-26 11:57:36,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560558801] [2023-11-26 11:57:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560558801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:36,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:36,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:57:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505204049] [2023-11-26 11:57:36,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:36,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:36,612 INFO L87 Difference]: Start difference. First operand 235 states and 369 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-26 11:57:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:38,127 INFO L93 Difference]: Finished difference Result 606 states and 955 transitions. [2023-11-26 11:57:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:57:38,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 253 [2023-11-26 11:57:38,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:38,133 INFO L225 Difference]: With dead ends: 606 [2023-11-26 11:57:38,134 INFO L226 Difference]: Without dead ends: 441 [2023-11-26 11:57:38,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:57:38,136 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 600 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:38,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 945 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:57:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-26 11:57:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2023-11-26 11:57:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 241 states have (on average 1.4730290456431536) internal successors, (355), 241 states have internal predecessors, (355), 76 states have call successors, (76), 5 states have call predecessors, (76), 5 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:57:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 507 transitions. [2023-11-26 11:57:38,188 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 507 transitions. Word has length 253 [2023-11-26 11:57:38,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:38,189 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 507 transitions. [2023-11-26 11:57:38,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-26 11:57:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 507 transitions. [2023-11-26 11:57:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-26 11:57:38,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:38,194 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:38,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:38,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:38,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 174735474, now seen corresponding path program 1 times [2023-11-26 11:57:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162732514] [2023-11-26 11:57:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:38,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:38,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563275098] [2023-11-26 11:57:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:38,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:38,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:38,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:38,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fafd71-d8f5-4bc1-a5b6-1abacf2bf86e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:57:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:38,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-26 11:57:38,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 2097 proven. 387 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-26 11:57:50,414 INFO L327 TraceCheckSpWp]: Computing backward predicates...