./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-94.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-94.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu --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 211883c60ce0bb06b72e4a9000b7135ce379464c60607038b1e2cd858553e4b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:05,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:06,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:33:06,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:06,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:06,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:06,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:06,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:06,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:06,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:06,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:06,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:06,116 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:06,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:06,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:06,119 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:06,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:06,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:06,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:06,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:06,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:06,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:06,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:06,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:06,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:06,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:06,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:06,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:06,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:06,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:06,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:06,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:06,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:06,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:06,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:06,130 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:06,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:06,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:06,131 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:06,131 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_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211883c60ce0bb06b72e4a9000b7135ce379464c60607038b1e2cd858553e4b3 [2023-11-19 07:33:06,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:06,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:06,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:06,489 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:06,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:06,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-94.i [2023-11-19 07:33:09,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:09,739 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:09,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-94.i [2023-11-19 07:33:09,757 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/data/4e0b0d9c6/90ba68a9de30443ca1c9e219823d78fd/FLAG1fc0b8670 [2023-11-19 07:33:09,813 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/data/4e0b0d9c6/90ba68a9de30443ca1c9e219823d78fd [2023-11-19 07:33:09,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:09,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:09,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:09,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:09,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:09,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:09" (1/1) ... [2023-11-19 07:33:09,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c6ac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:09, skipping insertion in model container [2023-11-19 07:33:09,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:09" (1/1) ... [2023-11-19 07:33:09,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:10,031 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_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-94.i[916,929] [2023-11-19 07:33:10,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:10,139 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:10,157 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_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-94.i[916,929] [2023-11-19 07:33:10,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:10,276 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:10,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10 WrapperNode [2023-11-19 07:33:10,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:10,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:10,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:10,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:10,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,386 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2023-11-19 07:33:10,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:10,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:10,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:10,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:10,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:10,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:10,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:10,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:10,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:10,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:10,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:33:10,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:33:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:10,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:10,670 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:10,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:11,276 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:11,294 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:11,294 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:33:11,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:11 BoogieIcfgContainer [2023-11-19 07:33:11,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:11,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:11,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:11,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:11,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:09" (1/3) ... [2023-11-19 07:33:11,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f68786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:11, skipping insertion in model container [2023-11-19 07:33:11,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (2/3) ... [2023-11-19 07:33:11,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f68786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:11, skipping insertion in model container [2023-11-19 07:33:11,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:11" (3/3) ... [2023-11-19 07:33:11,310 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-94.i [2023-11-19 07:33:11,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:11,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:33:11,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:11,423 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;@61ebc266, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:11,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:33:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:33:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 07:33:11,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:11,454 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:11,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:11,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1346124662, now seen corresponding path program 1 times [2023-11-19 07:33:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:11,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135941118] [2023-11-19 07:33:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:11,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011271864] [2023-11-19 07:33:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:11,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:11,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:11,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:11,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:33:12,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:33:12,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:12,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135941118] [2023-11-19 07:33:12,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:12,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011271864] [2023-11-19 07:33:12,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011271864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:12,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:12,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:33:12,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377794585] [2023-11-19 07:33:12,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:12,233 INFO L87 Difference]: Start difference. First operand has 91 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:33:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:12,429 INFO L93 Difference]: Finished difference Result 214 states and 376 transitions. [2023-11-19 07:33:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:12,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-19 07:33:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:12,478 INFO L225 Difference]: With dead ends: 214 [2023-11-19 07:33:12,478 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 07:33:12,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:12,491 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 81 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:12,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 407 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 07:33:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2023-11-19 07:33:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 72 states have internal predecessors, (93), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 07:33:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 179 transitions. [2023-11-19 07:33:12,553 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 179 transitions. Word has length 178 [2023-11-19 07:33:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:12,555 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 179 transitions. [2023-11-19 07:33:12,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:33:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 179 transitions. [2023-11-19 07:33:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:33:12,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:12,560 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:12,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:12,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:12,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash -349879057, now seen corresponding path program 1 times [2023-11-19 07:33:12,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:12,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695876799] [2023-11-19 07:33:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:12,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841536044] [2023-11-19 07:33:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:12,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:12,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:33:13,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:33:14,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695876799] [2023-11-19 07:33:14,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841536044] [2023-11-19 07:33:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841536044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:33:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795030104] [2023-11-19 07:33:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:14,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:14,031 INFO L87 Difference]: Start difference. First operand 117 states and 179 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:33:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:14,455 INFO L93 Difference]: Finished difference Result 283 states and 428 transitions. [2023-11-19 07:33:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:33:14,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:33:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:14,461 INFO L225 Difference]: With dead ends: 283 [2023-11-19 07:33:14,461 INFO L226 Difference]: Without dead ends: 195 [2023-11-19 07:33:14,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:33:14,464 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 156 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:14,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 481 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:33:14,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-19 07:33:14,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 167. [2023-11-19 07:33:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.3761467889908257) internal successors, (150), 109 states have internal predecessors, (150), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:33:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 258 transitions. [2023-11-19 07:33:14,502 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 258 transitions. Word has length 179 [2023-11-19 07:33:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:14,504 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 258 transitions. [2023-11-19 07:33:14,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:33:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 258 transitions. [2023-11-19 07:33:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:33:14,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:14,508 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:14,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:14,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:14,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:14,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash 330179313, now seen corresponding path program 1 times [2023-11-19 07:33:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:14,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491859414] [2023-11-19 07:33:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:14,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:14,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068234270] [2023-11-19 07:33:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:14,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:14,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:14,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:33:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:33:15,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:33:15,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491859414] [2023-11-19 07:33:15,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068234270] [2023-11-19 07:33:15,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068234270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:15,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:15,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103887291] [2023-11-19 07:33:15,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:15,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:15,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:15,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:15,278 INFO L87 Difference]: Start difference. First operand 167 states and 258 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:33:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:15,514 INFO L93 Difference]: Finished difference Result 420 states and 648 transitions. [2023-11-19 07:33:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:15,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:33:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:15,523 INFO L225 Difference]: With dead ends: 420 [2023-11-19 07:33:15,523 INFO L226 Difference]: Without dead ends: 306 [2023-11-19 07:33:15,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:15,528 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 167 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:15,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 372 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:33:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-19 07:33:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 272. [2023-11-19 07:33:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 185 states have (on average 1.3567567567567567) internal successors, (251), 185 states have internal predecessors, (251), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-19 07:33:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 413 transitions. [2023-11-19 07:33:15,616 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 413 transitions. Word has length 179 [2023-11-19 07:33:15,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:15,617 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 413 transitions. [2023-11-19 07:33:15,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:33:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 413 transitions. [2023-11-19 07:33:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:33:15,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:15,621 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:15,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:15,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:15,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:15,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1475259021, now seen corresponding path program 1 times [2023-11-19 07:33:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812259555] [2023-11-19 07:33:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:15,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694685873] [2023-11-19 07:33:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:15,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:33:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:16,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:33:16,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 456 proven. 63 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-11-19 07:33:18,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:20,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812259555] [2023-11-19 07:33:20,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694685873] [2023-11-19 07:33:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694685873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:20,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 07:33:20,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944865041] [2023-11-19 07:33:20,655 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:33:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:33:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:33:20,657 INFO L87 Difference]: Start difference. First operand 272 states and 413 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-19 07:33:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:22,127 INFO L93 Difference]: Finished difference Result 959 states and 1412 transitions. [2023-11-19 07:33:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:33:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 179 [2023-11-19 07:33:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:22,134 INFO L225 Difference]: With dead ends: 959 [2023-11-19 07:33:22,135 INFO L226 Difference]: Without dead ends: 769 [2023-11-19 07:33:22,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:33:22,138 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 596 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 729 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:33:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-11-19 07:33:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 682. [2023-11-19 07:33:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 514 states have (on average 1.3754863813229572) internal successors, (707), 518 states have internal predecessors, (707), 151 states have call successors, (151), 16 states have call predecessors, (151), 16 states have return successors, (151), 147 states have call predecessors, (151), 151 states have call successors, (151) [2023-11-19 07:33:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1009 transitions. [2023-11-19 07:33:22,236 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1009 transitions. Word has length 179 [2023-11-19 07:33:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:22,237 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1009 transitions. [2023-11-19 07:33:22,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-19 07:33:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1009 transitions. [2023-11-19 07:33:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:33:22,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:22,240 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:22,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:22,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1217093583, now seen corresponding path program 1 times [2023-11-19 07:33:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475006446] [2023-11-19 07:33:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:22,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:22,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136397165] [2023-11-19 07:33:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:22,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:22,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:33:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:22,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:33:22,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 647 proven. 27 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-11-19 07:33:23,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475006446] [2023-11-19 07:33:23,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136397165] [2023-11-19 07:33:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136397165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:23,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:33:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497725511] [2023-11-19 07:33:23,755 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:33:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:33:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=192, Unknown=1, NotChecked=0, Total=240 [2023-11-19 07:33:23,757 INFO L87 Difference]: Start difference. First operand 682 states and 1009 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-19 07:33:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:26,391 INFO L93 Difference]: Finished difference Result 2165 states and 3137 transitions. [2023-11-19 07:33:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-19 07:33:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 179 [2023-11-19 07:33:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:26,412 INFO L225 Difference]: With dead ends: 2165 [2023-11-19 07:33:26,413 INFO L226 Difference]: Without dead ends: 1605 [2023-11-19 07:33:26,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=339, Invalid=992, Unknown=1, NotChecked=0, Total=1332 [2023-11-19 07:33:26,416 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 299 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:26,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1058 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:33:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2023-11-19 07:33:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 911. [2023-11-19 07:33:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 699 states have (on average 1.3819742489270386) internal successors, (966), 704 states have internal predecessors, (966), 182 states have call successors, (182), 29 states have call predecessors, (182), 29 states have return successors, (182), 177 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 07:33:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1330 transitions. [2023-11-19 07:33:26,583 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1330 transitions. Word has length 179 [2023-11-19 07:33:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:26,584 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1330 transitions. [2023-11-19 07:33:26,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-19 07:33:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1330 transitions. [2023-11-19 07:33:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:33:26,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:26,588 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:26,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:26,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:26,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1552843891, now seen corresponding path program 1 times [2023-11-19 07:33:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190336801] [2023-11-19 07:33:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:26,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601509531] [2023-11-19 07:33:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:26,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:26,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:26,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:26,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:33:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:27,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:33:27,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 647 proven. 27 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-11-19 07:33:28,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:31,479 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_26~0 65536))) (let ((.cse6 (< c_~var_1_27~0 0)) (.cse5 (< 0 (+ c_~var_1_27~0 1))) (.cse2 (+ .cse3 c_~var_1_27~0)) (.cse0 (mod c_~var_1_32~0 65536)) (.cse7 (forall ((~var_1_19~0 Int)) (or (not (= (mod ~var_1_19~0 c_~var_1_27~0) 0)) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0))))) (and (forall ((~var_1_19~0 Int)) (let ((.cse1 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< ~var_1_19~0 0) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse1) .cse2) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 .cse1) .cse3)))) (forall ((~var_1_19~0 Int)) (let ((.cse4 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse4) .cse2) (= .cse4 0) (< 0 (+ ~var_1_19~0 1)) (< (+ .cse0 c_~var_1_27~0 .cse4) .cse3)))) (forall ((~var_1_19~0 Int)) (or (< ~var_1_19~0 0) (< (+ .cse0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse3) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0))) (or (forall ((~var_1_19~0 Int)) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse3))) .cse5) (or (forall ((~var_1_19~0 Int)) (or (< ~var_1_19~0 0) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse2) (< 255 ~var_1_19~0))) .cse6) (or (< .cse0 .cse3) .cse7) (or .cse5 (forall ((~var_1_19~0 Int)) (let ((.cse8 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (= .cse8 0) (< 0 (+ ~var_1_19~0 1)) (< (+ .cse0 c_~var_1_27~0 .cse8) .cse3))))) (or .cse6 (forall ((~var_1_19~0 Int)) (let ((.cse9 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse9) .cse2) (= .cse9 0) (< 0 (+ ~var_1_19~0 1)))))) (or (forall ((~var_1_19~0 Int)) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse2) (< 255 ~var_1_19~0))) .cse6) (or (forall ((~var_1_19~0 Int)) (or (< ~var_1_19~0 0) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse3))) .cse5) (forall ((~var_1_19~0 Int)) (let ((.cse10 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse10) .cse2) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 .cse10) .cse3)))) (or (< .cse0 .cse2) (< (+ .cse0 c_~var_1_27~0) .cse3) .cse7)))) is different from false [2023-11-19 07:33:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190336801] [2023-11-19 07:33:37,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601509531] [2023-11-19 07:33:37,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601509531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:37,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:37,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:33:37,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636391603] [2023-11-19 07:33:37,909 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:37,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:33:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:33:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=194, Unknown=5, NotChecked=28, Total=272 [2023-11-19 07:33:37,912 INFO L87 Difference]: Start difference. First operand 911 states and 1330 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-19 07:33:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:46,750 INFO L93 Difference]: Finished difference Result 1944 states and 2815 transitions. [2023-11-19 07:33:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:33:46,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 179 [2023-11-19 07:33:46,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:46,760 INFO L225 Difference]: With dead ends: 1944 [2023-11-19 07:33:46,760 INFO L226 Difference]: Without dead ends: 1235 [2023-11-19 07:33:46,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=222, Invalid=769, Unknown=5, NotChecked=60, Total=1056 [2023-11-19 07:33:46,764 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 253 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 103 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:46,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 962 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 651 Invalid, 19 Unknown, 0 Unchecked, 5.5s Time] [2023-11-19 07:33:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-11-19 07:33:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 969. [2023-11-19 07:33:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 757 states have (on average 1.383091149273448) internal successors, (1047), 762 states have internal predecessors, (1047), 182 states have call successors, (182), 29 states have call predecessors, (182), 29 states have return successors, (182), 177 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 07:33:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1411 transitions. [2023-11-19 07:33:46,899 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1411 transitions. Word has length 179 [2023-11-19 07:33:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:46,900 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1411 transitions. [2023-11-19 07:33:46,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-19 07:33:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1411 transitions. [2023-11-19 07:33:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:33:46,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:46,904 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:46,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:47,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:33:47,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:47,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2062065035, now seen corresponding path program 1 times [2023-11-19 07:33:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:47,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197056939] [2023-11-19 07:33:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:47,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:47,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:47,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960706355] [2023-11-19 07:33:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:47,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:47,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:47,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:47,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_536ad9f3-0d5a-4afa-bd79-57fdb7bb9a74/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:33:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:47,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:33:47,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 776 proven. 48 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-11-19 07:33:52,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:58,656 WARN L854 $PredicateComparison]: unable to prove that (or (let ((.cse0 (mod c_~var_1_32~0 65536)) (.cse1 (mod c_~var_1_26~0 65536))) (and (or (forall ((v_~var_1_27~0_15 Int)) (or (< (+ (mod c_~var_1_19~0 v_~var_1_27~0_15) .cse0) .cse1) (= v_~var_1_27~0_15 0) (< (+ v_~var_1_27~0_15 2147483648) 0))) (< c_~var_1_19~0 0)) (forall ((v_~var_1_27~0_15 Int)) (let ((.cse2 (mod c_~var_1_19~0 v_~var_1_27~0_15))) (or (< (+ .cse2 .cse0 v_~var_1_27~0_15) .cse1) (< (+ .cse2 .cse0) (+ .cse1 v_~var_1_27~0_15)) (= v_~var_1_27~0_15 0) (< (+ v_~var_1_27~0_15 2147483648) 0)))) (or (forall ((v_~var_1_27~0_15 Int)) (or (= v_~var_1_27~0_15 0) (not (= (mod c_~var_1_19~0 v_~var_1_27~0_15) 0)) (< (+ v_~var_1_27~0_15 2147483648) 0))) (< .cse0 .cse1)))) (= c_~var_1_19~0 0)) is different from false [2023-11-19 07:33:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197056939] [2023-11-19 07:33:58,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960706355] [2023-11-19 07:33:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960706355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:58,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:33:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598305836] [2023-11-19 07:33:58,935 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:33:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:33:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=253, Unknown=1, NotChecked=34, Total=380 [2023-11-19 07:33:58,938 INFO L87 Difference]: Start difference. First operand 969 states and 1411 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 5 states have call successors, (27), 5 states have call predecessors, (27), 8 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-19 07:34:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:02,894 INFO L93 Difference]: Finished difference Result 1736 states and 2459 transitions. [2023-11-19 07:34:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:34:02,895 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 5 states have call successors, (27), 5 states have call predecessors, (27), 8 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 179 [2023-11-19 07:34:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted.