./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-9.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_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/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_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/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_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/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 64112e1b749b3f3bd1f90e7c6ef1307c373f22395af003cd405b370514a79ebf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:31,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:31,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:00:31,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:31,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:31,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:31,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:31,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:31,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:31,753 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:31,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:31,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:31,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:31,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:31,758 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:31,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:31,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:31,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:31,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:31,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:31,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:31,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:31,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:31,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:31,764 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:31,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:31,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:31,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:31,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:31,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:31,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:31,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:31,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:31,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:31,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:31,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:31,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:31,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:31,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:31,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:31,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:31,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:31,780 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_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64112e1b749b3f3bd1f90e7c6ef1307c373f22395af003cd405b370514a79ebf [2023-11-26 12:00:32,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:32,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:32,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:32,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:32,153 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:32,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-9.i [2023-11-26 12:00:35,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:35,558 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:35,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-9.i [2023-11-26 12:00:35,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/data/3be0ee74a/1b4636eccae44d558c1ca24783a288ec/FLAG53f0b49d4 [2023-11-26 12:00:35,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/data/3be0ee74a/1b4636eccae44d558c1ca24783a288ec [2023-11-26 12:00:35,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:35,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:35,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:35,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:35,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:35,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:35" (1/1) ... [2023-11-26 12:00:35,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de0cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:35, skipping insertion in model container [2023-11-26 12:00:35,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:35" (1/1) ... [2023-11-26 12:00:35,690 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:35,845 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_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-9.i[915,928] [2023-11-26 12:00:36,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:36,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:36,187 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_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-9.i[915,928] [2023-11-26 12:00:36,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:36,386 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:36,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36 WrapperNode [2023-11-26 12:00:36,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:36,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:36,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:36,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:36,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,562 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 907 [2023-11-26 12:00:36,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:36,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:36,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:36,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:36,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,679 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 12:00:36,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:36,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:36,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:36,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:36,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (1/1) ... [2023-11-26 12:00:36,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:36,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:36,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:00:36,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:00:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:37,149 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:37,151 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:38,887 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:38,949 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:38,949 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:00:38,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:38 BoogieIcfgContainer [2023-11-26 12:00:38,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:38,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:38,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:38,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:38,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:35" (1/3) ... [2023-11-26 12:00:38,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d257df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:38, skipping insertion in model container [2023-11-26 12:00:38,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:36" (2/3) ... [2023-11-26 12:00:38,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d257df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:38, skipping insertion in model container [2023-11-26 12:00:38,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:38" (3/3) ... [2023-11-26 12:00:38,961 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-9.i [2023-11-26 12:00:38,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:38,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:00:39,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:39,074 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;@57f09d44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:39,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:00:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 262 states have (on average 1.5877862595419847) internal successors, (416), 263 states have internal predecessors, (416), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-26 12:00:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2023-11-26 12:00:39,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:39,141 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:39,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:39,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash -585108217, now seen corresponding path program 1 times [2023-11-26 12:00:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490233744] [2023-11-26 12:00:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490233744] [2023-11-26 12:00:39,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:00:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254371675] [2023-11-26 12:00:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:39,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:39,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:39,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:40,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:00:40,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2023-11-26 12:00:40,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254371675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:40,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:40,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773170198] [2023-11-26 12:00:40,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:00:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:00:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:40,554 INFO L87 Difference]: Start difference. First operand has 345 states, 262 states have (on average 1.5877862595419847) internal successors, (416), 263 states have internal predecessors, (416), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-11-26 12:00:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:40,676 INFO L93 Difference]: Finished difference Result 687 states and 1230 transitions. [2023-11-26 12:00:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:00:40,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 563 [2023-11-26 12:00:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:40,697 INFO L225 Difference]: With dead ends: 687 [2023-11-26 12:00:40,697 INFO L226 Difference]: Without dead ends: 343 [2023-11-26 12:00:40,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:40,709 INFO L413 NwaCegarLoop]: 568 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, 568 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 [2023-11-26 12:00:40,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 568 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-26 12:00:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-26 12:00:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 261 states have (on average 1.5747126436781609) internal successors, (411), 261 states have internal predecessors, (411), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-26 12:00:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 571 transitions. [2023-11-26 12:00:40,831 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 571 transitions. Word has length 563 [2023-11-26 12:00:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:40,832 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 571 transitions. [2023-11-26 12:00:40,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-11-26 12:00:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 571 transitions. [2023-11-26 12:00:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2023-11-26 12:00:40,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:40,866 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:40,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:41,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:00:41,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:41,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1862946313, now seen corresponding path program 1 times [2023-11-26 12:00:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:41,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673166040] [2023-11-26 12:00:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:41,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:41,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121370232] [2023-11-26 12:00:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:41,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:41,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:41,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:41,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:42,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673166040] [2023-11-26 12:00:42,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121370232] [2023-11-26 12:00:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121370232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:42,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:42,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283104059] [2023-11-26 12:00:42,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:42,686 INFO L87 Difference]: Start difference. First operand 343 states and 571 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:43,174 INFO L93 Difference]: Finished difference Result 1209 states and 2021 transitions. [2023-11-26 12:00:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:43,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 563 [2023-11-26 12:00:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:43,186 INFO L225 Difference]: With dead ends: 1209 [2023-11-26 12:00:43,187 INFO L226 Difference]: Without dead ends: 867 [2023-11-26 12:00:43,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:43,190 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 757 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:43,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1964 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:00:43,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-11-26 12:00:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 803. [2023-11-26 12:00:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 640 states have (on average 1.609375) internal successors, (1030), 640 states have internal predecessors, (1030), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-26 12:00:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1350 transitions. [2023-11-26 12:00:43,288 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1350 transitions. Word has length 563 [2023-11-26 12:00:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:43,291 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1350 transitions. [2023-11-26 12:00:43,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1350 transitions. [2023-11-26 12:00:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2023-11-26 12:00:43,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:43,322 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:43,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 12:00:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:43,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:43,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1843318199, now seen corresponding path program 1 times [2023-11-26 12:00:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148657544] [2023-11-26 12:00:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:43,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:43,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949950552] [2023-11-26 12:00:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:43,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:43,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:43,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:44,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:44,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:45,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:45,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148657544] [2023-11-26 12:00:45,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949950552] [2023-11-26 12:00:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949950552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:45,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:45,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751340348] [2023-11-26 12:00:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:45,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:45,085 INFO L87 Difference]: Start difference. First operand 803 states and 1350 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:45,616 INFO L93 Difference]: Finished difference Result 2748 states and 4629 transitions. [2023-11-26 12:00:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:45,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 564 [2023-11-26 12:00:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:45,637 INFO L225 Difference]: With dead ends: 2748 [2023-11-26 12:00:45,637 INFO L226 Difference]: Without dead ends: 1946 [2023-11-26 12:00:45,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:45,644 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 981 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:45,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1674 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2023-11-26 12:00:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1824. [2023-11-26 12:00:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1499 states have (on average 1.6304202801867913) internal successors, (2444), 1499 states have internal predecessors, (2444), 320 states have call successors, (320), 4 states have call predecessors, (320), 4 states have return successors, (320), 320 states have call predecessors, (320), 320 states have call successors, (320) [2023-11-26 12:00:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 3084 transitions. [2023-11-26 12:00:45,935 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 3084 transitions. Word has length 564 [2023-11-26 12:00:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:45,942 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 3084 transitions. [2023-11-26 12:00:45,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 3084 transitions. [2023-11-26 12:00:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2023-11-26 12:00:45,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:45,955 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:45,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:46,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:46,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:46,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -147046916, now seen corresponding path program 1 times [2023-11-26 12:00:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996216798] [2023-11-26 12:00:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:46,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:46,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15022315] [2023-11-26 12:00:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:46,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:46,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:46,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:46,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:47,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996216798] [2023-11-26 12:00:47,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15022315] [2023-11-26 12:00:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15022315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:47,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207252988] [2023-11-26 12:00:47,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:47,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:47,600 INFO L87 Difference]: Start difference. First operand 1824 states and 3084 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:48,156 INFO L93 Difference]: Finished difference Result 4440 states and 7496 transitions. [2023-11-26 12:00:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:48,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 565 [2023-11-26 12:00:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:48,180 INFO L225 Difference]: With dead ends: 4440 [2023-11-26 12:00:48,181 INFO L226 Difference]: Without dead ends: 2617 [2023-11-26 12:00:48,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:00:48,189 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 616 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:48,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 2227 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2023-11-26 12:00:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2424. [2023-11-26 12:00:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2018 states have (on average 1.6357779980178395) internal successors, (3301), 2018 states have internal predecessors, (3301), 400 states have call successors, (400), 5 states have call predecessors, (400), 5 states have return successors, (400), 400 states have call predecessors, (400), 400 states have call successors, (400) [2023-11-26 12:00:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 4101 transitions. [2023-11-26 12:00:48,511 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 4101 transitions. Word has length 565 [2023-11-26 12:00:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:48,513 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 4101 transitions. [2023-11-26 12:00:48,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 4101 transitions. [2023-11-26 12:00:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-11-26 12:00:48,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:48,526 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:48,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-26 12:00:48,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:48,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -794600363, now seen corresponding path program 1 times [2023-11-26 12:00:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:48,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099490493] [2023-11-26 12:00:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:48,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79838672] [2023-11-26 12:00:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:48,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:48,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:48,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:00:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:49,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:00:49,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:51,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099490493] [2023-11-26 12:00:51,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79838672] [2023-11-26 12:00:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79838672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:51,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:51,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421932787] [2023-11-26 12:00:51,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:51,363 INFO L87 Difference]: Start difference. First operand 2424 states and 4101 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:51,941 INFO L93 Difference]: Finished difference Result 4882 states and 8251 transitions. [2023-11-26 12:00:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 566 [2023-11-26 12:00:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:51,961 INFO L225 Difference]: With dead ends: 4882 [2023-11-26 12:00:51,961 INFO L226 Difference]: Without dead ends: 2607 [2023-11-26 12:00:51,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:51,968 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 745 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:51,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1958 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2023-11-26 12:00:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2429. [2023-11-26 12:00:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2023 states have (on average 1.6307464162135443) internal successors, (3299), 2023 states have internal predecessors, (3299), 400 states have call successors, (400), 5 states have call predecessors, (400), 5 states have return successors, (400), 400 states have call predecessors, (400), 400 states have call successors, (400) [2023-11-26 12:00:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 4099 transitions. [2023-11-26 12:00:52,214 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 4099 transitions. Word has length 566 [2023-11-26 12:00:52,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:52,215 INFO L495 AbstractCegarLoop]: Abstraction has 2429 states and 4099 transitions. [2023-11-26 12:00:52,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 4099 transitions. [2023-11-26 12:00:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-11-26 12:00:52,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:52,223 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:52,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:52,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:52,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:52,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1358506455, now seen corresponding path program 1 times [2023-11-26 12:00:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:52,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126742233] [2023-11-26 12:00:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:52,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:52,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16434057] [2023-11-26 12:00:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:52,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:52,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:52,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:52,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:00:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:53,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:53,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:53,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126742233] [2023-11-26 12:00:53,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16434057] [2023-11-26 12:00:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16434057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:53,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:53,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565931629] [2023-11-26 12:00:53,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:53,130 INFO L87 Difference]: Start difference. First operand 2429 states and 4099 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:53,358 INFO L93 Difference]: Finished difference Result 6961 states and 11772 transitions. [2023-11-26 12:00:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 566 [2023-11-26 12:00:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:53,396 INFO L225 Difference]: With dead ends: 6961 [2023-11-26 12:00:53,396 INFO L226 Difference]: Without dead ends: 4687 [2023-11-26 12:00:53,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 564 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 12:00:53,405 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 543 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:53,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1112 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2023-11-26 12:00:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4685. [2023-11-26 12:00:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 3955 states have (on average 1.627307206068268) internal successors, (6436), 3955 states have internal predecessors, (6436), 720 states have call successors, (720), 9 states have call predecessors, (720), 9 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2023-11-26 12:00:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 7876 transitions. [2023-11-26 12:00:53,839 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 7876 transitions. Word has length 566 [2023-11-26 12:00:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:53,840 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 7876 transitions. [2023-11-26 12:00:53,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 7876 transitions. [2023-11-26 12:00:53,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-11-26 12:00:53,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:53,849 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:53,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:54,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1996502956, now seen corresponding path program 1 times [2023-11-26 12:00:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936510702] [2023-11-26 12:00:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:54,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:54,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271028909] [2023-11-26 12:00:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:54,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:54,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:54,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:00:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:54,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:55,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936510702] [2023-11-26 12:00:55,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271028909] [2023-11-26 12:00:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271028909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701509575] [2023-11-26 12:00:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:55,727 INFO L87 Difference]: Start difference. First operand 4685 states and 7876 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:56,675 INFO L93 Difference]: Finished difference Result 15048 states and 25273 transitions. [2023-11-26 12:00:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 567 [2023-11-26 12:00:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:56,765 INFO L225 Difference]: With dead ends: 15048 [2023-11-26 12:00:56,765 INFO L226 Difference]: Without dead ends: 11323 [2023-11-26 12:00:56,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:56,780 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 723 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:56,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1939 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:00:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11323 states. [2023-11-26 12:00:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11323 to 11179. [2023-11-26 12:00:57,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11179 states, 9728 states have (on average 1.6348684210526316) internal successors, (15904), 9736 states have internal predecessors, (15904), 1424 states have call successors, (1424), 26 states have call predecessors, (1424), 26 states have return successors, (1424), 1416 states have call predecessors, (1424), 1424 states have call successors, (1424) [2023-11-26 12:00:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11179 states to 11179 states and 18752 transitions. [2023-11-26 12:00:57,718 INFO L78 Accepts]: Start accepts. Automaton has 11179 states and 18752 transitions. Word has length 567 [2023-11-26 12:00:57,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:57,719 INFO L495 AbstractCegarLoop]: Abstraction has 11179 states and 18752 transitions. [2023-11-26 12:00:57,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 11179 states and 18752 transitions. [2023-11-26 12:00:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-11-26 12:00:57,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:57,736 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:57,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:57,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:57,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:57,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1777648238, now seen corresponding path program 1 times [2023-11-26 12:00:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630090767] [2023-11-26 12:00:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:58,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836011484] [2023-11-26 12:00:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:58,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:58,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:58,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:58,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:00:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:58,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:58,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:00:58,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:58,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630090767] [2023-11-26 12:00:58,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:58,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836011484] [2023-11-26 12:00:58,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836011484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:58,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:58,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:58,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027706381] [2023-11-26 12:00:58,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:58,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:58,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:58,745 INFO L87 Difference]: Start difference. First operand 11179 states and 18752 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:00:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:59,542 INFO L93 Difference]: Finished difference Result 32757 states and 54970 transitions. [2023-11-26 12:00:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 567 [2023-11-26 12:00:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:59,631 INFO L225 Difference]: With dead ends: 32757 [2023-11-26 12:00:59,631 INFO L226 Difference]: Without dead ends: 21906 [2023-11-26 12:00:59,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 565 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 12:00:59,665 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 542 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:59,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21906 states. [2023-11-26 12:01:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21906 to 18728. [2023-11-26 12:01:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18728 states, 17277 states have (on average 1.6638305261330093) internal successors, (28746), 17285 states have internal predecessors, (28746), 1424 states have call successors, (1424), 26 states have call predecessors, (1424), 26 states have return successors, (1424), 1416 states have call predecessors, (1424), 1424 states have call successors, (1424) [2023-11-26 12:01:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18728 states to 18728 states and 31594 transitions. [2023-11-26 12:01:01,266 INFO L78 Accepts]: Start accepts. Automaton has 18728 states and 31594 transitions. Word has length 567 [2023-11-26 12:01:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:01,267 INFO L495 AbstractCegarLoop]: Abstraction has 18728 states and 31594 transitions. [2023-11-26 12:01:01,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:01:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 18728 states and 31594 transitions. [2023-11-26 12:01:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-11-26 12:01:01,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:01,292 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:01,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:01,502 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:01,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1970299986, now seen corresponding path program 1 times [2023-11-26 12:01:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109262228] [2023-11-26 12:01:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:01,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096082641] [2023-11-26 12:01:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:01,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:01,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:01,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:01,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:01:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:02,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:01:04,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:04,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:04,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109262228] [2023-11-26 12:01:04,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:04,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096082641] [2023-11-26 12:01:04,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096082641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:04,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159909578] [2023-11-26 12:01:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:04,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:04,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:04,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:04,207 INFO L87 Difference]: Start difference. First operand 18728 states and 31594 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:01:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:05,263 INFO L93 Difference]: Finished difference Result 39380 states and 66279 transitions. [2023-11-26 12:01:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:05,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 567 [2023-11-26 12:01:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:05,322 INFO L225 Difference]: With dead ends: 39380 [2023-11-26 12:01:05,322 INFO L226 Difference]: Without dead ends: 20793 [2023-11-26 12:01:05,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:05,354 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 593 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:05,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1673 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:01:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20793 states. [2023-11-26 12:01:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20793 to 18727. [2023-11-26 12:01:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18727 states, 17276 states have (on average 1.6610326464459366) internal successors, (28696), 17284 states have internal predecessors, (28696), 1424 states have call successors, (1424), 26 states have call predecessors, (1424), 26 states have return successors, (1424), 1416 states have call predecessors, (1424), 1424 states have call successors, (1424) [2023-11-26 12:01:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18727 states to 18727 states and 31544 transitions. [2023-11-26 12:01:06,322 INFO L78 Accepts]: Start accepts. Automaton has 18727 states and 31544 transitions. Word has length 567 [2023-11-26 12:01:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:06,324 INFO L495 AbstractCegarLoop]: Abstraction has 18727 states and 31544 transitions. [2023-11-26 12:01:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:01:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18727 states and 31544 transitions. [2023-11-26 12:01:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-11-26 12:01:06,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:06,343 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:06,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:06,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:06,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1428620203, now seen corresponding path program 1 times [2023-11-26 12:01:06,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:06,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960391501] [2023-11-26 12:01:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:06,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:06,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639292654] [2023-11-26 12:01:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:06,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:06,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:01:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:07,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:01:07,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:01:07,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:07,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960391501] [2023-11-26 12:01:07,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639292654] [2023-11-26 12:01:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639292654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:07,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280364407] [2023-11-26 12:01:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:07,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:07,942 INFO L87 Difference]: Start difference. First operand 18727 states and 31544 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:01:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:08,665 INFO L93 Difference]: Finished difference Result 39377 states and 66177 transitions. [2023-11-26 12:01:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:08,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 567 [2023-11-26 12:01:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:08,720 INFO L225 Difference]: With dead ends: 39377 [2023-11-26 12:01:08,721 INFO L226 Difference]: Without dead ends: 20793 [2023-11-26 12:01:08,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:08,746 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 618 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2226 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:01:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20793 states. [2023-11-26 12:01:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20793 to 18727. [2023-11-26 12:01:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18727 states, 17276 states have (on average 1.6609747626765454) internal successors, (28695), 17284 states have internal predecessors, (28695), 1424 states have call successors, (1424), 26 states have call predecessors, (1424), 26 states have return successors, (1424), 1416 states have call predecessors, (1424), 1424 states have call successors, (1424) [2023-11-26 12:01:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18727 states to 18727 states and 31543 transitions. [2023-11-26 12:01:09,744 INFO L78 Accepts]: Start accepts. Automaton has 18727 states and 31543 transitions. Word has length 567 [2023-11-26 12:01:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:09,745 INFO L495 AbstractCegarLoop]: Abstraction has 18727 states and 31543 transitions. [2023-11-26 12:01:09,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-26 12:01:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 18727 states and 31543 transitions. [2023-11-26 12:01:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-11-26 12:01:09,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:09,764 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:09,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:09,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:09,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:09,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:09,979 INFO L85 PathProgramCache]: Analyzing trace with hash 154384584, now seen corresponding path program 1 times [2023-11-26 12:01:09,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:09,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874507901] [2023-11-26 12:01:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:09,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:10,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536572339] [2023-11-26 12:01:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:10,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:10,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:10,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:01:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:10,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:10,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6387 proven. 123 refuted. 0 times theorem prover too weak. 6130 trivial. 0 not checked. [2023-11-26 12:01:11,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 114 proven. 123 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-26 12:01:11,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874507901] [2023-11-26 12:01:11,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536572339] [2023-11-26 12:01:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536572339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:11,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 12:01:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088167986] [2023-11-26 12:01:11,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:11,808 INFO L87 Difference]: Start difference. First operand 18727 states and 31543 transitions. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-11-26 12:01:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,947 INFO L93 Difference]: Finished difference Result 37353 states and 62851 transitions. [2023-11-26 12:01:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:01:12,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) Word has length 568 [2023-11-26 12:01:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:13,001 INFO L225 Difference]: With dead ends: 37353 [2023-11-26 12:01:13,001 INFO L226 Difference]: Without dead ends: 18829 [2023-11-26 12:01:13,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:13,027 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 396 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1274 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18829 states. [2023-11-26 12:01:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18829 to 18795. [2023-11-26 12:01:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18795 states, 17327 states have (on average 1.6574132856235932) internal successors, (28718), 17335 states have internal predecessors, (28718), 1424 states have call successors, (1424), 43 states have call predecessors, (1424), 43 states have return successors, (1424), 1416 states have call predecessors, (1424), 1424 states have call successors, (1424) [2023-11-26 12:01:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18795 states to 18795 states and 31566 transitions. [2023-11-26 12:01:14,146 INFO L78 Accepts]: Start accepts. Automaton has 18795 states and 31566 transitions. Word has length 568 [2023-11-26 12:01:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:14,147 INFO L495 AbstractCegarLoop]: Abstraction has 18795 states and 31566 transitions. [2023-11-26 12:01:14,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-11-26 12:01:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18795 states and 31566 transitions. [2023-11-26 12:01:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-11-26 12:01:14,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:14,167 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:14,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:14,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:14,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:14,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:14,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1786197430, now seen corresponding path program 1 times [2023-11-26 12:01:14,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:14,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564553864] [2023-11-26 12:01:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:14,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:14,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:14,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157687908] [2023-11-26 12:01:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:14,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:14,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:14,462 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:14,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb416c73-9b7a-4101-a9b0-ca0aa7fa5816/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:01:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:15,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:01:15,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-26 12:01:15,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:15,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:15,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564553864] [2023-11-26 12:01:15,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:15,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157687908] [2023-11-26 12:01:15,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157687908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:15,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:15,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964973647] [2023-11-26 12:01:15,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:15,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:15,891 INFO L87 Difference]: Start difference. First operand 18795 states and 31566 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80)