./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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 c075bf31c8a61d5818086da4c01a54dc9522c53729e14bb5c6eb6f9ba650fc63 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:26,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:26,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:46:26,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:26,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:26,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:26,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:26,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:26,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:46:26,449 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:46:26,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:26,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:26,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:26,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:26,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:26,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:26,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:46:26,455 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:26,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:46:26,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:26,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:26,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:46:26,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:26,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:46:26,460 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:26,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:46:26,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:26,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:26,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:26,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:46:26,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:26,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:26,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:26,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:26,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:46:26,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:46:26,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:46:26,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:26,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:26,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:46:26,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:26,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:26,468 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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c075bf31c8a61d5818086da4c01a54dc9522c53729e14bb5c6eb6f9ba650fc63 [2023-11-26 11:46:26,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:26,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:26,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:26,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:26,777 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:26,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-11-26 11:46:30,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:30,349 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:30,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-11-26 11:46:30,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data/f116b2c44/8e3314445e484697820d28886d5c5f92/FLAG89baf8f68 [2023-11-26 11:46:30,387 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data/f116b2c44/8e3314445e484697820d28886d5c5f92 [2023-11-26 11:46:30,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:30,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:30,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:30,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:30,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:30,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:30,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fddcad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30, skipping insertion in model container [2023-11-26 11:46:30,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:30,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:30,615 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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i[916,929] [2023-11-26 11:46:30,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:30,719 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:30,732 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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i[916,929] [2023-11-26 11:46:30,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:30,815 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:30,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30 WrapperNode [2023-11-26 11:46:30,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:30,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:30,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:30,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:30,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:30,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:30,941 INFO L138 Inliner]: procedures = 26, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 327 [2023-11-26 11:46:30,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:30,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:30,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:30,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:30,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:30,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:30,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,010 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 11:46:31,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:31,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:31,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:31,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:31,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (1/1) ... [2023-11-26 11:46:31,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:31,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:31,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:46:31,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:46:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:46:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:31,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:31,286 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:31,289 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:31,999 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:32,084 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:32,084 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:46:32,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:32 BoogieIcfgContainer [2023-11-26 11:46:32,085 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:32,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:32,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:32,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:32,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:30" (1/3) ... [2023-11-26 11:46:32,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d540464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:32, skipping insertion in model container [2023-11-26 11:46:32,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:30" (2/3) ... [2023-11-26 11:46:32,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d540464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:32, skipping insertion in model container [2023-11-26 11:46:32,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:32" (3/3) ... [2023-11-26 11:46:32,104 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-11-26 11:46:32,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:32,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:46:32,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:32,203 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;@59f07043, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:32,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:46:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 79 states have (on average 1.620253164556962) internal successors, (128), 80 states have internal predecessors, (128), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-26 11:46:32,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:32,231 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:32,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:32,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1050267650, now seen corresponding path program 1 times [2023-11-26 11:46:32,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:32,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189011815] [2023-11-26 11:46:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189011815] [2023-11-26 11:46:32,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:46:32,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869375507] [2023-11-26 11:46:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:32,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:32,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:32,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:32,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:46:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:32,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:46:32,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2023-11-26 11:46:33,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:33,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869375507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:33,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:33,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350780525] [2023-11-26 11:46:33,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:33,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:33,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:33,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:33,096 INFO L87 Difference]: Start difference. First operand has 121 states, 79 states have (on average 1.620253164556962) internal successors, (128), 80 states have internal predecessors, (128), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-26 11:46:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:33,171 INFO L93 Difference]: Finished difference Result 239 states and 449 transitions. [2023-11-26 11:46:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) Word has length 246 [2023-11-26 11:46:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:33,186 INFO L225 Difference]: With dead ends: 239 [2023-11-26 11:46:33,186 INFO L226 Difference]: Without dead ends: 119 [2023-11-26 11:46:33,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 245 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 11:46:33,200 INFO L413 NwaCegarLoop]: 197 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, 197 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 11:46:33,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-26 11:46:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-26 11:46:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 78 states have (on average 1.564102564102564) internal successors, (122), 78 states have internal predecessors, (122), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 200 transitions. [2023-11-26 11:46:33,302 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 200 transitions. Word has length 246 [2023-11-26 11:46:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:33,302 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 200 transitions. [2023-11-26 11:46:33,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-26 11:46:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 200 transitions. [2023-11-26 11:46:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-26 11:46:33,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:33,320 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:33,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:33,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:46:33,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:33,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1583846848, now seen corresponding path program 1 times [2023-11-26 11:46:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259917898] [2023-11-26 11:46:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:33,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:33,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455140949] [2023-11-26 11:46:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:33,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:33,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:33,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:46:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:33,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:46:33,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:33,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259917898] [2023-11-26 11:46:34,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455140949] [2023-11-26 11:46:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455140949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918606288] [2023-11-26 11:46:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:34,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:34,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:34,006 INFO L87 Difference]: Start difference. First operand 119 states and 200 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:34,079 INFO L93 Difference]: Finished difference Result 303 states and 503 transitions. [2023-11-26 11:46:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:34,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 246 [2023-11-26 11:46:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:34,085 INFO L225 Difference]: With dead ends: 303 [2023-11-26 11:46:34,085 INFO L226 Difference]: Without dead ends: 185 [2023-11-26 11:46:34,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 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 11:46:34,088 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 192 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:34,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 390 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-26 11:46:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 119. [2023-11-26 11:46:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 78 states have (on average 1.5384615384615385) internal successors, (120), 78 states have internal predecessors, (120), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 198 transitions. [2023-11-26 11:46:34,113 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 198 transitions. Word has length 246 [2023-11-26 11:46:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:34,116 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 198 transitions. [2023-11-26 11:46:34,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 198 transitions. [2023-11-26 11:46:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-26 11:46:34,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:34,121 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:34,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:34,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:34,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash -535534719, now seen corresponding path program 1 times [2023-11-26 11:46:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746486363] [2023-11-26 11:46:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:34,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420826521] [2023-11-26 11:46:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:34,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:34,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:34,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:46:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:34,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:46:34,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:34,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:34,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746486363] [2023-11-26 11:46:34,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:34,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420826521] [2023-11-26 11:46:34,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420826521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:34,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:34,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049890082] [2023-11-26 11:46:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:34,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:34,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:34,670 INFO L87 Difference]: Start difference. First operand 119 states and 198 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:34,735 INFO L93 Difference]: Finished difference Result 238 states and 397 transitions. [2023-11-26 11:46:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 247 [2023-11-26 11:46:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:34,744 INFO L225 Difference]: With dead ends: 238 [2023-11-26 11:46:34,745 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 11:46:34,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 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 11:46:34,747 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:34,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 383 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 11:46:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-26 11:46:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 79 states have internal predecessors, (121), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 199 transitions. [2023-11-26 11:46:34,795 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 199 transitions. Word has length 247 [2023-11-26 11:46:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:34,799 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 199 transitions. [2023-11-26 11:46:34,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 199 transitions. [2023-11-26 11:46:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-26 11:46:34,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:34,805 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:34,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:35,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:35,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2123882621, now seen corresponding path program 1 times [2023-11-26 11:46:35,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:35,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215791324] [2023-11-26 11:46:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:35,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:35,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474716078] [2023-11-26 11:46:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:35,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:35,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:46:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:35,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:46:35,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:35,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:35,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:35,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215791324] [2023-11-26 11:46:35,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:35,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474716078] [2023-11-26 11:46:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474716078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:35,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318821999] [2023-11-26 11:46:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:35,425 INFO L87 Difference]: Start difference. First operand 120 states and 199 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:35,731 INFO L93 Difference]: Finished difference Result 391 states and 647 transitions. [2023-11-26 11:46:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 247 [2023-11-26 11:46:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:35,739 INFO L225 Difference]: With dead ends: 391 [2023-11-26 11:46:35,740 INFO L226 Difference]: Without dead ends: 272 [2023-11-26 11:46:35,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:35,744 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 332 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:35,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1122 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-26 11:46:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 200. [2023-11-26 11:46:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 141 states have (on average 1.5815602836879432) internal successors, (223), 142 states have internal predecessors, (223), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-26 11:46:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 335 transitions. [2023-11-26 11:46:35,789 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 335 transitions. Word has length 247 [2023-11-26 11:46:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:35,790 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 335 transitions. [2023-11-26 11:46:35,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 335 transitions. [2023-11-26 11:46:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-26 11:46:35,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:35,795 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:35,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:36,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-26 11:46:36,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:36,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash -616414532, now seen corresponding path program 1 times [2023-11-26 11:46:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:36,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314706843] [2023-11-26 11:46:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:36,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:36,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:36,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068801821] [2023-11-26 11:46:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:36,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:36,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:36,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:36,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:46:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:36,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:46:36,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:36,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314706843] [2023-11-26 11:46:36,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068801821] [2023-11-26 11:46:36,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068801821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:36,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:36,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:36,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220550796] [2023-11-26 11:46:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:36,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:36,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:36,330 INFO L87 Difference]: Start difference. First operand 200 states and 335 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:36,523 INFO L93 Difference]: Finished difference Result 407 states and 676 transitions. [2023-11-26 11:46:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 248 [2023-11-26 11:46:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:36,527 INFO L225 Difference]: With dead ends: 407 [2023-11-26 11:46:36,527 INFO L226 Difference]: Without dead ends: 208 [2023-11-26 11:46:36,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:36,529 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 133 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:36,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 528 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-26 11:46:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 139. [2023-11-26 11:46:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 97 states have internal predecessors, (150), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 228 transitions. [2023-11-26 11:46:36,550 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 228 transitions. Word has length 248 [2023-11-26 11:46:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:36,551 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 228 transitions. [2023-11-26 11:46:36,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 228 transitions. [2023-11-26 11:46:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-26 11:46:36,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:36,557 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:36,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:36,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:36,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:36,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash -397559814, now seen corresponding path program 1 times [2023-11-26 11:46:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:36,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098782026] [2023-11-26 11:46:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:36,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:36,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570023522] [2023-11-26 11:46:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:36,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:36,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:36,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:36,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:46:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:37,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:46:37,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:37,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098782026] [2023-11-26 11:46:37,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570023522] [2023-11-26 11:46:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570023522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:37,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:37,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670751703] [2023-11-26 11:46:37,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:37,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:37,128 INFO L87 Difference]: Start difference. First operand 139 states and 228 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:37,178 INFO L93 Difference]: Finished difference Result 379 states and 622 transitions. [2023-11-26 11:46:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 248 [2023-11-26 11:46:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:37,185 INFO L225 Difference]: With dead ends: 379 [2023-11-26 11:46:37,185 INFO L226 Difference]: Without dead ends: 241 [2023-11-26 11:46:37,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 246 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 11:46:37,187 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 130 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:37,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 470 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-26 11:46:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 238. [2023-11-26 11:46:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 172 states have (on average 1.558139534883721) internal successors, (268), 173 states have internal predecessors, (268), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-26 11:46:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 390 transitions. [2023-11-26 11:46:37,218 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 390 transitions. Word has length 248 [2023-11-26 11:46:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:37,219 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 390 transitions. [2023-11-26 11:46:37,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 390 transitions. [2023-11-26 11:46:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-26 11:46:37,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:37,223 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:37,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:46:37,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:37,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -335520200, now seen corresponding path program 1 times [2023-11-26 11:46:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762002310] [2023-11-26 11:46:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:37,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:37,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581546850] [2023-11-26 11:46:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:37,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:37,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:37,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:46:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:37,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:46:37,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:37,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762002310] [2023-11-26 11:46:37,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581546850] [2023-11-26 11:46:37,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581546850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:37,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:37,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:37,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029070378] [2023-11-26 11:46:37,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:37,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:37,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:37,764 INFO L87 Difference]: Start difference. First operand 238 states and 390 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:37,843 INFO L93 Difference]: Finished difference Result 706 states and 1156 transitions. [2023-11-26 11:46:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 248 [2023-11-26 11:46:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:37,849 INFO L225 Difference]: With dead ends: 706 [2023-11-26 11:46:37,850 INFO L226 Difference]: Without dead ends: 469 [2023-11-26 11:46:37,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:37,852 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 189 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:37,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 930 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-26 11:46:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 246. [2023-11-26 11:46:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 180 states have (on average 1.5555555555555556) internal successors, (280), 181 states have internal predecessors, (280), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-26 11:46:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 402 transitions. [2023-11-26 11:46:37,885 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 402 transitions. Word has length 248 [2023-11-26 11:46:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:37,886 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 402 transitions. [2023-11-26 11:46:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 402 transitions. [2023-11-26 11:46:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-26 11:46:37,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:37,889 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:37,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:38,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:38,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:38,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:38,098 INFO L85 PathProgramCache]: Analyzing trace with hash -335460618, now seen corresponding path program 1 times [2023-11-26 11:46:38,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:38,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014571720] [2023-11-26 11:46:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:38,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121003142] [2023-11-26 11:46:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:38,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:38,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:38,137 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:38,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:46:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:38,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:46:38,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:38,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014571720] [2023-11-26 11:46:38,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121003142] [2023-11-26 11:46:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121003142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:46:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974742460] [2023-11-26 11:46:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:38,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:46:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:46:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:46:38,422 INFO L87 Difference]: Start difference. First operand 246 states and 402 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:38,898 INFO L93 Difference]: Finished difference Result 958 states and 1555 transitions. [2023-11-26 11:46:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:46:38,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 248 [2023-11-26 11:46:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:38,904 INFO L225 Difference]: With dead ends: 958 [2023-11-26 11:46:38,905 INFO L226 Difference]: Without dead ends: 713 [2023-11-26 11:46:38,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:46:38,908 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 502 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:38,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1716 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:46:38,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-26 11:46:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 252. [2023-11-26 11:46:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 186 states have (on average 1.5483870967741935) internal successors, (288), 187 states have internal predecessors, (288), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-26 11:46:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 410 transitions. [2023-11-26 11:46:38,972 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 410 transitions. Word has length 248 [2023-11-26 11:46:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:38,975 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 410 transitions. [2023-11-26 11:46:38,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 410 transitions. [2023-11-26 11:46:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-26 11:46:38,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:38,998 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:39,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:39,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:39,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:39,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash 824611665, now seen corresponding path program 1 times [2023-11-26 11:46:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662897629] [2023-11-26 11:46:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:39,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803368988] [2023-11-26 11:46:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:39,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:39,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:46:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:39,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:46:39,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:39,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:39,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:39,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662897629] [2023-11-26 11:46:39,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803368988] [2023-11-26 11:46:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803368988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:39,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:39,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:46:39,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711493147] [2023-11-26 11:46:39,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:46:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:46:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:46:39,983 INFO L87 Difference]: Start difference. First operand 252 states and 410 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:41,140 INFO L93 Difference]: Finished difference Result 942 states and 1521 transitions. [2023-11-26 11:46:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:46:41,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 248 [2023-11-26 11:46:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:41,148 INFO L225 Difference]: With dead ends: 942 [2023-11-26 11:46:41,148 INFO L226 Difference]: Without dead ends: 691 [2023-11-26 11:46:41,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:46:41,152 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 421 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:41,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 945 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:46:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-26 11:46:41,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 470. [2023-11-26 11:46:41,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 339 states have (on average 1.519174041297935) internal successors, (515), 341 states have internal predecessors, (515), 122 states have call successors, (122), 8 states have call predecessors, (122), 8 states have return successors, (122), 120 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-26 11:46:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 759 transitions. [2023-11-26 11:46:41,232 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 759 transitions. Word has length 248 [2023-11-26 11:46:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:41,233 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 759 transitions. [2023-11-26 11:46:41,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 759 transitions. [2023-11-26 11:46:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-26 11:46:41,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:41,236 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:41,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:41,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:41,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -864332077, now seen corresponding path program 1 times [2023-11-26 11:46:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877520320] [2023-11-26 11:46:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:41,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:41,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860406274] [2023-11-26 11:46:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:41,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:41,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:41,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:41,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:46:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:41,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:46:41,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1508 proven. 51 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2023-11-26 11:46:42,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:42,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877520320] [2023-11-26 11:46:42,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860406274] [2023-11-26 11:46:42,657 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-26 11:46:42,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:42,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:42,865 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: Modulus must be strictly greater one but is 0 at de.uni_freiburg.informatik.ultimate.util.ArithmeticUtils.multiplicativeInverse(ArithmeticUtils.java:89) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDml.findAllDmlPossibilities(DualJunctionDml.java:168) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDml.tryToEliminate(DualJunctionDml.java:191) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-26 11:46:42,869 INFO L158 Benchmark]: Toolchain (without parser) took 12473.55ms. Allocated memory was 140.5MB in the beginning and 272.6MB in the end (delta: 132.1MB). Free memory was 103.3MB in the beginning and 170.3MB in the end (delta: -67.0MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2023-11-26 11:46:42,870 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 140.5MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:46:42,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.74ms. Allocated memory is still 140.5MB. Free memory was 103.3MB in the beginning and 86.3MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:46:42,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.44ms. Allocated memory is still 140.5MB. Free memory was 86.3MB in the beginning and 82.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:46:42,871 INFO L158 Benchmark]: Boogie Preprocessor took 125.71ms. Allocated memory is still 140.5MB. Free memory was 82.1MB in the beginning and 77.1MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:46:42,872 INFO L158 Benchmark]: RCFGBuilder took 1016.63ms. Allocated memory was 140.5MB in the beginning and 188.7MB in the end (delta: 48.2MB). Free memory was 76.7MB in the beginning and 134.0MB in the end (delta: -57.3MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-11-26 11:46:42,872 INFO L158 Benchmark]: TraceAbstraction took 10780.74ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 132.9MB in the beginning and 170.3MB in the end (delta: -37.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-26 11:46:42,875 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 140.5MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.74ms. Allocated memory is still 140.5MB. Free memory was 103.3MB in the beginning and 86.3MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.44ms. Allocated memory is still 140.5MB. Free memory was 86.3MB in the beginning and 82.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.71ms. Allocated memory is still 140.5MB. Free memory was 82.1MB in the beginning and 77.1MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1016.63ms. Allocated memory was 140.5MB in the beginning and 188.7MB in the end (delta: 48.2MB). Free memory was 76.7MB in the beginning and 134.0MB in the end (delta: -57.3MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10780.74ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 132.9MB in the beginning and 170.3MB in the end (delta: -37.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: Modulus must be strictly greater one but is 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: Modulus must be strictly greater one but is 0: de.uni_freiburg.informatik.ultimate.util.ArithmeticUtils.multiplicativeInverse(ArithmeticUtils.java:89) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-26 11:46:42,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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 c075bf31c8a61d5818086da4c01a54dc9522c53729e14bb5c6eb6f9ba650fc63 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:45,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:46,035 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:46:46,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:46,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:46,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:46,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:46,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:46,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:46:46,102 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:46:46,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:46,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:46,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:46,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:46,106 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:46,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:46,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:46:46,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:46,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:46,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:46,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:46:46,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:46,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:46:46,112 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:46:46,112 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:46:46,113 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:46:46,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:46,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:46:46,114 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:46,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:46,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:46,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:46:46,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:46,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:46,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:46,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:46,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:46:46,119 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:46:46,119 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:46:46,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:46,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:46,120 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:46:46,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:46,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:46,121 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:46:46,121 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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c075bf31c8a61d5818086da4c01a54dc9522c53729e14bb5c6eb6f9ba650fc63 [2023-11-26 11:46:46,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:46,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:46,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:46,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:46,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:46,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-11-26 11:46:49,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:50,067 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:50,075 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-11-26 11:46:50,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data/fbeeaa3f1/a203cb397f4e47298fa722367e14dc72/FLAG8201897db [2023-11-26 11:46:50,111 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/data/fbeeaa3f1/a203cb397f4e47298fa722367e14dc72 [2023-11-26 11:46:50,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:50,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:50,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:50,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:50,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:50,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cca6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50, skipping insertion in model container [2023-11-26 11:46:50,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:50,332 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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i[916,929] [2023-11-26 11:46:50,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:50,486 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:50,500 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_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i[916,929] [2023-11-26 11:46:50,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:50,604 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:50,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50 WrapperNode [2023-11-26 11:46:50,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:50,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:50,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:50,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:50,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,722 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2023-11-26 11:46:50,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:50,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:50,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:50,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:50,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,790 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 11:46:50,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:50,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:50,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:50,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:50,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:50,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:50,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:46:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:46:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:46:50,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:50,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:51,079 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:51,082 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:52,133 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:52,212 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:52,212 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:46:52,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:52 BoogieIcfgContainer [2023-11-26 11:46:52,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:52,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:52,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:52,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:52,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:50" (1/3) ... [2023-11-26 11:46:52,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f236e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:52, skipping insertion in model container [2023-11-26 11:46:52,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50" (2/3) ... [2023-11-26 11:46:52,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f236e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:52, skipping insertion in model container [2023-11-26 11:46:52,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:52" (3/3) ... [2023-11-26 11:46:52,223 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-11-26 11:46:52,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:52,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:46:52,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:52,326 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;@7aa5d0dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:52,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:46:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-26 11:46:52,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:52,355 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:52,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:52,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash -34283185, now seen corresponding path program 1 times [2023-11-26 11:46:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:46:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320211824] [2023-11-26 11:46:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:52,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:52,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:46:52,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:46:52,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:46:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:52,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:46:53,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2023-11-26 11:46:53,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:53,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:46:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320211824] [2023-11-26 11:46:53,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320211824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:53,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:53,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:53,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319649514] [2023-11-26 11:46:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:53,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:46:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:53,195 INFO L87 Difference]: Start difference. First operand has 108 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-26 11:46:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:53,340 INFO L93 Difference]: Finished difference Result 213 states and 397 transitions. [2023-11-26 11:46:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:53,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 242 [2023-11-26 11:46:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:53,359 INFO L225 Difference]: With dead ends: 213 [2023-11-26 11:46:53,359 INFO L226 Difference]: Without dead ends: 106 [2023-11-26 11:46:53,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 241 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 11:46:53,370 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:53,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-26 11:46:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-26 11:46:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 65 states have internal predecessors, (95), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 11:46:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 173 transitions. [2023-11-26 11:46:53,440 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 173 transitions. Word has length 242 [2023-11-26 11:46:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:53,441 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 173 transitions. [2023-11-26 11:46:53,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-26 11:46:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 173 transitions. [2023-11-26 11:46:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-26 11:46:53,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:53,453 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:53,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:53,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:53,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:53,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash -981239791, now seen corresponding path program 1 times [2023-11-26 11:46:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:46:53,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60756673] [2023-11-26 11:46:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:53,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:53,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:46:53,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:46:53,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:46:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:46:54,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:54,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:54,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:46:54,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60756673] [2023-11-26 11:46:54,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60756673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:54,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:54,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42737327] [2023-11-26 11:46:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:46:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:54,327 INFO L87 Difference]: Start difference. First operand 106 states and 173 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:54,509 INFO L93 Difference]: Finished difference Result 282 states and 461 transitions. [2023-11-26 11:46:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 242 [2023-11-26 11:46:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:54,525 INFO L225 Difference]: With dead ends: 282 [2023-11-26 11:46:54,526 INFO L226 Difference]: Without dead ends: 177 [2023-11-26 11:46:54,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 240 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 11:46:54,533 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 110 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:54,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 415 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-26 11:46:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2023-11-26 11:46:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 111 states have internal predecessors, (162), 61 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-26 11:46:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 284 transitions. [2023-11-26 11:46:54,595 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 284 transitions. Word has length 242 [2023-11-26 11:46:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:54,600 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 284 transitions. [2023-11-26 11:46:54,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 284 transitions. [2023-11-26 11:46:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-26 11:46:54,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:54,607 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:54,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:54,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:54,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:54,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash -558537965, now seen corresponding path program 1 times [2023-11-26 11:46:54,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:46:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884708319] [2023-11-26 11:46:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:54,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:54,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:46:54,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:46:54,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 11:46:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:55,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:46:55,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:46:56,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:56,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:46:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884708319] [2023-11-26 11:46:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884708319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:56,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:56,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420688254] [2023-11-26 11:46:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:46:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:56,901 INFO L87 Difference]: Start difference. First operand 174 states and 284 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:57,530 INFO L93 Difference]: Finished difference Result 485 states and 794 transitions. [2023-11-26 11:46:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:46:57,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 242 [2023-11-26 11:46:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:57,539 INFO L225 Difference]: With dead ends: 485 [2023-11-26 11:46:57,539 INFO L226 Difference]: Without dead ends: 312 [2023-11-26 11:46:57,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:46:57,542 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 149 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:57,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 587 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:46:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-26 11:46:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 280. [2023-11-26 11:46:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 176 states have (on average 1.4772727272727273) internal successors, (260), 177 states have internal predecessors, (260), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-26 11:46:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 460 transitions. [2023-11-26 11:46:57,623 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 460 transitions. Word has length 242 [2023-11-26 11:46:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:57,624 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 460 transitions. [2023-11-26 11:46:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:46:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 460 transitions. [2023-11-26 11:46:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-26 11:46:57,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:57,630 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:57,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:57,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:57,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:57,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:57,843 INFO L85 PathProgramCache]: Analyzing trace with hash 186491772, now seen corresponding path program 1 times [2023-11-26 11:46:57,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:46:57,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285784146] [2023-11-26 11:46:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:57,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:46:57,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:46:57,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:46:57,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 11:46:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:46:58,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 464 proven. 105 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2023-11-26 11:46:58,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 9 proven. 105 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-11-26 11:46:59,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:46:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285784146] [2023-11-26 11:46:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285784146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:59,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:59,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-26 11:46:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909188894] [2023-11-26 11:46:59,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:59,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:46:59,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:46:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:46:59,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:46:59,351 INFO L87 Difference]: Start difference. First operand 280 states and 460 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2023-11-26 11:47:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:00,125 INFO L93 Difference]: Finished difference Result 477 states and 764 transitions. [2023-11-26 11:47:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:47:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 243 [2023-11-26 11:47:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:00,133 INFO L225 Difference]: With dead ends: 477 [2023-11-26 11:47:00,133 INFO L226 Difference]: Without dead ends: 304 [2023-11-26 11:47:00,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 477 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:47:00,136 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 257 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:00,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 290 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:47:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-26 11:47:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 292. [2023-11-26 11:47:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 185 states have (on average 1.4324324324324325) internal successors, (265), 186 states have internal predecessors, (265), 100 states have call successors, (100), 6 states have call predecessors, (100), 6 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-26 11:47:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 465 transitions. [2023-11-26 11:47:00,197 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 465 transitions. Word has length 243 [2023-11-26 11:47:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:00,199 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 465 transitions. [2023-11-26 11:47:00,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2023-11-26 11:47:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 465 transitions. [2023-11-26 11:47:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-26 11:47:00,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:00,204 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:00,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:00,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash 675536760, now seen corresponding path program 1 times [2023-11-26 11:47:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401497948] [2023-11-26 11:47:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:00,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:00,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 11:47:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:47:00,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-11-26 11:47:01,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:01,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401497948] [2023-11-26 11:47:01,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401497948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:01,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691971192] [2023-11-26 11:47:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:01,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:01,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:01,643 INFO L87 Difference]: Start difference. First operand 292 states and 465 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:47:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:03,417 INFO L93 Difference]: Finished difference Result 481 states and 762 transitions. [2023-11-26 11:47:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:03,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 244 [2023-11-26 11:47:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:03,422 INFO L225 Difference]: With dead ends: 481 [2023-11-26 11:47:03,422 INFO L226 Difference]: Without dead ends: 300 [2023-11-26 11:47:03,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:47:03,424 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 136 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:03,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 426 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 11:47:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-26 11:47:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2023-11-26 11:47:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 185 states have (on average 1.4108108108108108) internal successors, (261), 186 states have internal predecessors, (261), 100 states have call successors, (100), 6 states have call predecessors, (100), 6 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-26 11:47:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 461 transitions. [2023-11-26 11:47:03,481 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 461 transitions. Word has length 244 [2023-11-26 11:47:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:03,482 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 461 transitions. [2023-11-26 11:47:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-11-26 11:47:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 461 transitions. [2023-11-26 11:47:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-26 11:47:03,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:03,487 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:03,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:03,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:03,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 620461943, now seen corresponding path program 1 times [2023-11-26 11:47:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:03,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148039182] [2023-11-26 11:47:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:03,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:03,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:03,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d142fe-e8bd-4a3c-bbaf-e2a9fab391e6/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 11:47:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:04,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 11:47:04,138 INFO L285 TraceCheckSpWp]: Computing forward predicates...