./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-48.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/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_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-48.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/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_1d224994-6eb2-43ca-9a5f-e224e24345a5/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 4a9e9bf709714475d9b4c0874c912dec9c2ff0a074bd43dedf9b533a3abda5f5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:10,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:10,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:55:10,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:10,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:10,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:10,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:10,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:10,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:10,764 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:10,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:10,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:10,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:10,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:10,767 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:10,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:10,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:10,769 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:10,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:10,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:10,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:10,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:10,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:10,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:10,774 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:10,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:10,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:10,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:10,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:10,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:10,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:10,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:10,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:10,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:10,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:10,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:10,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:10,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:10,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:10,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:10,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:10,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:10,783 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_1d224994-6eb2-43ca-9a5f-e224e24345a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a9e9bf709714475d9b4c0874c912dec9c2ff0a074bd43dedf9b533a3abda5f5 [2023-11-26 11:55:11,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:11,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:11,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:11,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:11,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:11,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-48.i [2023-11-26 11:55:14,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:14,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:14,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-48.i [2023-11-26 11:55:14,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/data/66a6956dc/81c027a1968147c6a0612fdd4c4cd3b0/FLAGeae160ff0 [2023-11-26 11:55:14,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/data/66a6956dc/81c027a1968147c6a0612fdd4c4cd3b0 [2023-11-26 11:55:14,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:14,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:14,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:14,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:14,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:14,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6176a2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14, skipping insertion in model container [2023-11-26 11:55:14,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,791 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:14,993 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_1d224994-6eb2-43ca-9a5f-e224e24345a5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-48.i[916,929] [2023-11-26 11:55:15,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:15,290 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:15,303 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_1d224994-6eb2-43ca-9a5f-e224e24345a5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-48.i[916,929] [2023-11-26 11:55:15,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:15,475 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:15,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15 WrapperNode [2023-11-26 11:55:15,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:15,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:15,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:15,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:15,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,631 INFO L138 Inliner]: procedures = 26, calls = 123, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 866 [2023-11-26 11:55:15,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:15,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:15,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:15,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:15,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,669 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,728 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:55:15,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:15,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:15,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:15,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:15,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:15,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:15,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:15,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:55:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:55:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:16,099 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:16,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:17,555 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:17,658 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:17,658 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:55:17,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:17 BoogieIcfgContainer [2023-11-26 11:55:17,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:17,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:17,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:17,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:17,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:14" (1/3) ... [2023-11-26 11:55:17,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640f6b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:17, skipping insertion in model container [2023-11-26 11:55:17,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (2/3) ... [2023-11-26 11:55:17,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640f6b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:17, skipping insertion in model container [2023-11-26 11:55:17,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:17" (3/3) ... [2023-11-26 11:55:17,698 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-48.i [2023-11-26 11:55:17,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:17,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:55:17,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:17,789 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;@71fff7ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:17,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:55:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 221 states have (on average 1.6380090497737556) internal successors, (362), 222 states have internal predecessors, (362), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-26 11:55:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:17,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:17,857 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:17,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:17,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 644854222, now seen corresponding path program 1 times [2023-11-26 11:55:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:17,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374876077] [2023-11-26 11:55:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374876077] [2023-11-26 11:55:18,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:55:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451651103] [2023-11-26 11:55:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:18,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:18,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:18,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:18,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:55:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:18,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:55:19,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 23762 trivial. 0 not checked. [2023-11-26 11:55:19,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:19,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451651103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:19,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:19,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:19,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064878462] [2023-11-26 11:55:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:19,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:55:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:19,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:55:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:55:19,180 INFO L87 Difference]: Start difference. First operand has 334 states, 221 states have (on average 1.6380090497737556) internal successors, (362), 222 states have internal predecessors, (362), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) [2023-11-26 11:55:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:19,274 INFO L93 Difference]: Finished difference Result 664 states and 1270 transitions. [2023-11-26 11:55:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:55:19,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) Word has length 700 [2023-11-26 11:55:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:19,291 INFO L225 Difference]: With dead ends: 664 [2023-11-26 11:55:19,291 INFO L226 Difference]: Without dead ends: 331 [2023-11-26 11:55:19,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 699 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 11:55:19,302 INFO L413 NwaCegarLoop]: 569 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, 569 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 11:55:19,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 569 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-26 11:55:19,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-11-26 11:55:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 219 states have (on average 1.6073059360730593) internal successors, (352), 219 states have internal predecessors, (352), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-26 11:55:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 572 transitions. [2023-11-26 11:55:19,421 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 572 transitions. Word has length 700 [2023-11-26 11:55:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:19,423 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 572 transitions. [2023-11-26 11:55:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) [2023-11-26 11:55:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 572 transitions. [2023-11-26 11:55:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:19,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:19,454 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:19,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:19,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:55:19,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:19,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash -441733660, now seen corresponding path program 1 times [2023-11-26 11:55:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408829598] [2023-11-26 11:55:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:19,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143288045] [2023-11-26 11:55:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:19,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:19,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:19,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:55:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:20,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:20,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:21,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408829598] [2023-11-26 11:55:21,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143288045] [2023-11-26 11:55:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143288045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:21,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:21,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283258932] [2023-11-26 11:55:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:21,711 INFO L87 Difference]: Start difference. First operand 331 states and 572 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:21,866 INFO L93 Difference]: Finished difference Result 991 states and 1714 transitions. [2023-11-26 11:55:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:21,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 700 [2023-11-26 11:55:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:21,884 INFO L225 Difference]: With dead ends: 991 [2023-11-26 11:55:21,884 INFO L226 Difference]: Without dead ends: 661 [2023-11-26 11:55:21,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:21,888 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 239 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:21,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1265 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-26 11:55:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 659. [2023-11-26 11:55:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 436 states have (on average 1.6077981651376148) internal successors, (701), 436 states have internal predecessors, (701), 220 states have call successors, (220), 2 states have call predecessors, (220), 2 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-11-26 11:55:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1141 transitions. [2023-11-26 11:55:22,070 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1141 transitions. Word has length 700 [2023-11-26 11:55:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:22,074 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1141 transitions. [2023-11-26 11:55:22,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1141 transitions. [2023-11-26 11:55:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:22,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:22,086 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:22,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:22,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:55:22,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:22,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash 821958585, now seen corresponding path program 1 times [2023-11-26 11:55:22,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:22,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696011979] [2023-11-26 11:55:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:22,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:22,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904965729] [2023-11-26 11:55:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:22,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:22,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:22,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:22,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:55:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:22,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:23,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:23,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:23,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:23,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696011979] [2023-11-26 11:55:23,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:23,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904965729] [2023-11-26 11:55:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904965729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:23,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:23,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530904256] [2023-11-26 11:55:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:23,111 INFO L87 Difference]: Start difference. First operand 659 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:23,227 INFO L93 Difference]: Finished difference Result 1957 states and 3387 transitions. [2023-11-26 11:55:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 700 [2023-11-26 11:55:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:23,240 INFO L225 Difference]: With dead ends: 1957 [2023-11-26 11:55:23,240 INFO L226 Difference]: Without dead ends: 1299 [2023-11-26 11:55:23,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:23,245 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 539 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:23,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1122 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2023-11-26 11:55:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2023-11-26 11:55:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 852 states have (on average 1.596244131455399) internal successors, (1360), 852 states have internal predecessors, (1360), 440 states have call successors, (440), 4 states have call predecessors, (440), 4 states have return successors, (440), 440 states have call predecessors, (440), 440 states have call successors, (440) [2023-11-26 11:55:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2240 transitions. [2023-11-26 11:55:23,529 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2240 transitions. Word has length 700 [2023-11-26 11:55:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:23,531 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 2240 transitions. [2023-11-26 11:55:23,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2240 transitions. [2023-11-26 11:55:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:23,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:23,540 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:23,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:23,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:23,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:23,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,750 INFO L85 PathProgramCache]: Analyzing trace with hash -306285379, now seen corresponding path program 1 times [2023-11-26 11:55:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726717723] [2023-11-26 11:55:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:23,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818601834] [2023-11-26 11:55:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:23,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:23,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:55:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:24,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:24,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726717723] [2023-11-26 11:55:24,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818601834] [2023-11-26 11:55:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818601834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:24,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:24,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198377140] [2023-11-26 11:55:24,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:24,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:24,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:24,394 INFO L87 Difference]: Start difference. First operand 1297 states and 2240 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:24,545 INFO L93 Difference]: Finished difference Result 3349 states and 5822 transitions. [2023-11-26 11:55:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:24,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 700 [2023-11-26 11:55:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:24,563 INFO L225 Difference]: With dead ends: 3349 [2023-11-26 11:55:24,564 INFO L226 Difference]: Without dead ends: 2053 [2023-11-26 11:55:24,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:24,571 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 324 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:24,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1121 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-11-26 11:55:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2046. [2023-11-26 11:55:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1433 states have (on average 1.6461967899511514) internal successors, (2359), 1437 states have internal predecessors, (2359), 604 states have call successors, (604), 8 states have call predecessors, (604), 8 states have return successors, (604), 600 states have call predecessors, (604), 604 states have call successors, (604) [2023-11-26 11:55:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3567 transitions. [2023-11-26 11:55:24,917 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3567 transitions. Word has length 700 [2023-11-26 11:55:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:24,920 INFO L495 AbstractCegarLoop]: Abstraction has 2046 states and 3567 transitions. [2023-11-26 11:55:24,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3567 transitions. [2023-11-26 11:55:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:24,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:24,931 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:24,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:25,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:25,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:25,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash 954631871, now seen corresponding path program 1 times [2023-11-26 11:55:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918809792] [2023-11-26 11:55:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:25,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:25,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432185338] [2023-11-26 11:55:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:25,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:25,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:25,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:25,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:55:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:25,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:25,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:25,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918809792] [2023-11-26 11:55:25,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432185338] [2023-11-26 11:55:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432185338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:25,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445055595] [2023-11-26 11:55:25,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:25,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:25,874 INFO L87 Difference]: Start difference. First operand 2046 states and 3567 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:26,129 INFO L93 Difference]: Finished difference Result 5962 states and 10365 transitions. [2023-11-26 11:55:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 700 [2023-11-26 11:55:26,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:26,166 INFO L225 Difference]: With dead ends: 5962 [2023-11-26 11:55:26,166 INFO L226 Difference]: Without dead ends: 3917 [2023-11-26 11:55:26,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:26,177 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 527 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:26,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1125 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2023-11-26 11:55:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3903. [2023-11-26 11:55:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 2678 states have (on average 1.6221060492905153) internal successors, (4344), 2686 states have internal predecessors, (4344), 1208 states have call successors, (1208), 16 states have call predecessors, (1208), 16 states have return successors, (1208), 1200 states have call predecessors, (1208), 1208 states have call successors, (1208) [2023-11-26 11:55:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6760 transitions. [2023-11-26 11:55:26,957 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6760 transitions. Word has length 700 [2023-11-26 11:55:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:26,959 INFO L495 AbstractCegarLoop]: Abstraction has 3903 states and 6760 transitions. [2023-11-26 11:55:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6760 transitions. [2023-11-26 11:55:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:26,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:26,971 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:26,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:27,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:27,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:27,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -66436483, now seen corresponding path program 1 times [2023-11-26 11:55:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801760978] [2023-11-26 11:55:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:27,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:27,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543128243] [2023-11-26 11:55:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:27,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:27,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:27,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:55:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:27,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:27,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:27,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:27,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:27,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801760978] [2023-11-26 11:55:27,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:27,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543128243] [2023-11-26 11:55:27,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543128243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:27,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:27,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253832536] [2023-11-26 11:55:27,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:27,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:27,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:27,868 INFO L87 Difference]: Start difference. First operand 3903 states and 6760 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:28,149 INFO L93 Difference]: Finished difference Result 8031 states and 13888 transitions. [2023-11-26 11:55:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 700 [2023-11-26 11:55:28,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:28,182 INFO L225 Difference]: With dead ends: 8031 [2023-11-26 11:55:28,183 INFO L226 Difference]: Without dead ends: 4129 [2023-11-26 11:55:28,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:28,197 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 16 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:28,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1129 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2023-11-26 11:55:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 4015. [2023-11-26 11:55:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 2790 states have (on average 1.614336917562724) internal successors, (4504), 2798 states have internal predecessors, (4504), 1208 states have call successors, (1208), 16 states have call predecessors, (1208), 16 states have return successors, (1208), 1200 states have call predecessors, (1208), 1208 states have call successors, (1208) [2023-11-26 11:55:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 6920 transitions. [2023-11-26 11:55:29,012 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 6920 transitions. Word has length 700 [2023-11-26 11:55:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:29,013 INFO L495 AbstractCegarLoop]: Abstraction has 4015 states and 6920 transitions. [2023-11-26 11:55:29,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 6920 transitions. [2023-11-26 11:55:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 11:55:29,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:29,026 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:29,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:29,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:29,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:29,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -64589441, now seen corresponding path program 1 times [2023-11-26 11:55:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840962612] [2023-11-26 11:55:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:29,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:29,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105604561] [2023-11-26 11:55:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:29,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:29,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:29,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:29,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:55:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:29,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:29,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:31,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840962612] [2023-11-26 11:55:31,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105604561] [2023-11-26 11:55:31,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105604561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:31,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200346672] [2023-11-26 11:55:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:31,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:31,121 INFO L87 Difference]: Start difference. First operand 4015 states and 6920 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:31,536 INFO L93 Difference]: Finished difference Result 12043 states and 20758 transitions. [2023-11-26 11:55:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 700 [2023-11-26 11:55:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:31,603 INFO L225 Difference]: With dead ends: 12043 [2023-11-26 11:55:31,603 INFO L226 Difference]: Without dead ends: 8029 [2023-11-26 11:55:31,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:31,688 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 200 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1131 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2023-11-26 11:55:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 8027. [2023-11-26 11:55:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8027 states, 5578 states have (on average 1.608820365722481) internal successors, (8974), 5594 states have internal predecessors, (8974), 2416 states have call successors, (2416), 32 states have call predecessors, (2416), 32 states have return successors, (2416), 2400 states have call predecessors, (2416), 2416 states have call successors, (2416) [2023-11-26 11:55:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 13806 transitions. [2023-11-26 11:55:32,763 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 13806 transitions. Word has length 700 [2023-11-26 11:55:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:32,764 INFO L495 AbstractCegarLoop]: Abstraction has 8027 states and 13806 transitions. [2023-11-26 11:55:32,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 13806 transitions. [2023-11-26 11:55:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-11-26 11:55:32,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:32,776 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:32,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:32,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:32,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2007725407, now seen corresponding path program 1 times [2023-11-26 11:55:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373200682] [2023-11-26 11:55:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:33,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:33,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140419992] [2023-11-26 11:55:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:33,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:33,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:33,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:55:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:33,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:55:33,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:34,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:34,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:34,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373200682] [2023-11-26 11:55:34,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:34,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140419992] [2023-11-26 11:55:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140419992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:34,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:34,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793888395] [2023-11-26 11:55:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:34,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:34,636 INFO L87 Difference]: Start difference. First operand 8027 states and 13806 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:36,407 INFO L93 Difference]: Finished difference Result 30113 states and 51625 transitions. [2023-11-26 11:55:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-11-26 11:55:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:36,521 INFO L225 Difference]: With dead ends: 30113 [2023-11-26 11:55:36,521 INFO L226 Difference]: Without dead ends: 22087 [2023-11-26 11:55:36,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:36,567 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 625 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:36,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1566 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:55:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22087 states. [2023-11-26 11:55:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22087 to 22003. [2023-11-26 11:55:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22003 states, 14962 states have (on average 1.5876219756717016) internal successors, (23754), 15026 states have internal predecessors, (23754), 6944 states have call successors, (6944), 96 states have call predecessors, (6944), 96 states have return successors, (6944), 6880 states have call predecessors, (6944), 6944 states have call successors, (6944) [2023-11-26 11:55:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22003 states to 22003 states and 37642 transitions. [2023-11-26 11:55:40,322 INFO L78 Accepts]: Start accepts. Automaton has 22003 states and 37642 transitions. Word has length 701 [2023-11-26 11:55:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:40,323 INFO L495 AbstractCegarLoop]: Abstraction has 22003 states and 37642 transitions. [2023-11-26 11:55:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22003 states and 37642 transitions. [2023-11-26 11:55:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-11-26 11:55:40,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:40,347 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:40,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:55:40,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:40,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash 237854047, now seen corresponding path program 1 times [2023-11-26 11:55:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:40,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40937167] [2023-11-26 11:55:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:40,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164269004] [2023-11-26 11:55:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:40,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:40,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:40,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:55:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:55:41,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-11-26 11:55:43,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:43,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40937167] [2023-11-26 11:55:43,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164269004] [2023-11-26 11:55:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164269004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:43,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:43,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:43,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253542810] [2023-11-26 11:55:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:43,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:43,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:43,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:43,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:43,822 INFO L87 Difference]: Start difference. First operand 22003 states and 37642 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:46,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:46,735 INFO L93 Difference]: Finished difference Result 71509 states and 122245 transitions. [2023-11-26 11:55:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:46,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-11-26 11:55:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:46,945 INFO L225 Difference]: With dead ends: 71509 [2023-11-26 11:55:46,945 INFO L226 Difference]: Without dead ends: 49507 [2023-11-26 11:55:47,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:47,034 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 961 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:47,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1458 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:55:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49507 states. [2023-11-26 11:55:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49507 to 43811. [2023-11-26 11:55:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43811 states, 29730 states have (on average 1.5785401950891356) internal successors, (46930), 29858 states have internal predecessors, (46930), 13888 states have call successors, (13888), 192 states have call predecessors, (13888), 192 states have return successors, (13888), 13760 states have call predecessors, (13888), 13888 states have call successors, (13888) [2023-11-26 11:55:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43811 states to 43811 states and 74706 transitions. [2023-11-26 11:55:53,291 INFO L78 Accepts]: Start accepts. Automaton has 43811 states and 74706 transitions. Word has length 701 [2023-11-26 11:55:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:53,292 INFO L495 AbstractCegarLoop]: Abstraction has 43811 states and 74706 transitions. [2023-11-26 11:55:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-11-26 11:55:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 43811 states and 74706 transitions. [2023-11-26 11:55:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-11-26 11:55:53,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:53,322 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:53,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:53,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:53,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:53,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -783214307, now seen corresponding path program 1 times [2023-11-26 11:55:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:53,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247806498] [2023-11-26 11:55:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:53,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:55:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778563362] [2023-11-26 11:55:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:53,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:53,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:53,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d224994-6eb2-43ca-9a5f-e224e24345a5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:55:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:54,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:55:54,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 10977 proven. 213 refuted. 0 times theorem prover too weak. 12790 trivial. 0 not checked. [2023-11-26 11:55:54,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 114 proven. 213 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-11-26 11:55:55,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247806498] [2023-11-26 11:55:55,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:55:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778563362] [2023-11-26 11:55:55,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778563362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:55,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:55:55,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:55:55,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057880733] [2023-11-26 11:55:55,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:55,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:55,564 INFO L87 Difference]: Start difference. First operand 43811 states and 74706 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182)